Fix duplicate words in documentation

flyway-core/src/main/java/org/flywaydb/core/api/configuration/ClassicConfiguration.java

@@ -864,7 +864,7 @@ public void setInstalledBy(String installedBy) {
      * <p>Note that this is only applicable for PostgreSQL, Aurora PostgreSQL, SQL Server and SQLite which all have
      * statements that do not run at all within a transaction.</p>
      * <p>This is not to be confused with implicit transaction, as they occur in MySQL or Oracle, where even though a
-     * DDL statement was run within within a transaction, the database will issue an implicit commit before and after
+     * DDL statement was run within a transaction, the database will issue an implicit commit before and after
      * its execution.</p>
      *
      * @param mixed {@code true} if mixed migrations should be allowed. {@code false} if an error should be thrown instead. (default: {@code false})

flyway-core/src/main/java/org/flywaydb/core/api/configuration/Configuration.java

@@ -75,7 +75,7 @@ public interface Configuration {
     String getBaselineDescription();
 
     /**
-     * Retrieves the The custom MigrationResolvers to be used in addition to the built-in ones for resolving Migrations to apply.
+     * Retrieves the custom MigrationResolvers to be used in addition to the built-in ones for resolving Migrations to apply.
      *
      * @return The custom MigrationResolvers to be used in addition to the built-in ones for resolving Migrations to apply. An empty array if none.
      * (default: none)
@@ -384,7 +384,7 @@ public interface Configuration {
      * <p>Note that this is only applicable for PostgreSQL, Aurora PostgreSQL, SQL Server and SQLite which all have
      * statements that do not run at all within a transaction.</p>
      * <p>This is not to be confused with implicit transaction, as they occur in MySQL or Oracle, where even though a
-     * DDL statement was run within within a transaction, the database will issue an implicit commit before and after
+     * DDL statement was run within a transaction, the database will issue an implicit commit before and after
      * its execution.</p>
      *
      * @return {@code true} if mixed migrations should be allowed. {@code false} if an error should be thrown instead. (default: {@code false})

flyway-core/src/main/java/org/flywaydb/core/api/configuration/FluentConfiguration.java

@@ -387,7 +387,7 @@ public FluentConfiguration installedBy(String installedBy) {
      * <p>Note that this is only applicable for PostgreSQL, Aurora PostgreSQL, SQL Server and SQLite which all have
      * statements that do not run at all within a transaction.</p>
      * <p>This is not to be confused with implicit transaction, as they occur in MySQL or Oracle, where even though a
-     * DDL statement was run within within a transaction, the database will issue an implicit commit before and after
+     * DDL statement was run within a transaction, the database will issue an implicit commit before and after
      * its execution.</p>
      *
      * @param mixed {@code true} if mixed migrations should be allowed. {@code false} if an error should be thrown instead. (default: {@code false})

flyway-core/src/main/java/org/flywaydb/core/internal/database/oracle/OracleSchema.java

@@ -233,7 +233,7 @@ private void disableFlashbackArchiveForFbaTrackedTables() throws SQLException {
      * Checks whether Oracle Locator metadata exists for the schema.
      *
      * @return {@code true} if it exists, {@code false} if not.
-     * @throws SQLException when checking checking metadata existence failed.
+     * @throws SQLException when checking metadata existence failed.
      */
     private boolean locatorMetadataExists() throws SQLException {
         return database.queryReturnsRows("SELECT * FROM ALL_SDO_GEOM_METADATA WHERE OWNER = ?", name);

flyway-gradle-plugin/src/main/java/org/flywaydb/gradle/FlywayExtension.java

@@ -330,7 +330,7 @@ public class FlywayExtension {
      * <p>Note that this is only applicable for PostgreSQL, Aurora PostgreSQL, SQL Server and SQLite which all have
      * statements that do not run at all within a transaction.</p>
      * <p>This is not to be confused with implicit transaction, as they occur in MySQL or Oracle, where even though a
-     * DDL statement was run within within a transaction, the database will issue an implicit commit before and after
+     * DDL statement was run within a transaction, the database will issue an implicit commit before and after
      * its execution.</p>
      * <p>{@code true} if mixed migrations should be allowed. {@code false} if an error should be thrown instead. (default: {@code false})</p>
      */

flyway-gradle-plugin/src/main/java/org/flywaydb/gradle/task/AbstractFlywayTask.java

@@ -375,7 +375,7 @@ public abstract class AbstractFlywayTask extends DefaultTask {
      * <p>Note that this is only applicable for PostgreSQL, Aurora PostgreSQL, SQL Server and SQLite which all have
      * statements that do not run at all within a transaction.</p>
      * <p>This is not to be confused with implicit transaction, as they occur in MySQL or Oracle, where even though a
-     * DDL statement was run within within a transaction, the database will issue an implicit commit before and after
+     * DDL statement was run within a transaction, the database will issue an implicit commit before and after
      * its execution.</p>
      * <p>{@code true} if mixed migrations should be allowed. {@code false} if an error should be thrown instead. (default: {@code false})</p>
      */

flyway-maven-plugin/src/main/java/org/flywaydb/maven/AbstractFlywayMojo.java

@@ -444,7 +444,7 @@ abstract class AbstractFlywayMojo extends AbstractMojo {
      * <p>Note that this is only applicable for PostgreSQL, Aurora PostgreSQL, SQL Server and SQLite which all have
      * statements that do not run at all within a transaction.</p>
      * <p>This is not to be confused with implicit transaction, as they occur in MySQL or Oracle, where even though a
-     * DDL statement was run within within a transaction, the database will issue an implicit commit before and after
+     * DDL statement was run within a transaction, the database will issue an implicit commit before and after
      * its execution.</p>
      * {@code true} if mixed migrations should be allowed. {@code false} if an error should be thrown instead. (default: {@code false})
      * <p>Also configurable with Maven or System Property: ${flyway.mixed}</p>