docs: fix docs for generate db schema (#10251)

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Author: r1tsuu

docs/database/postgres.mdx

@@ -260,24 +260,26 @@ postgresAdapter({
   beforeSchemaInit: [
     ({ schema, adapter }) => {
       // Add a new table
-      schema.rawTables.myTable = {
+      adapter.rawTables.myTable = {
         name: 'my_table',
-        columns: [{
-          name: 'my_id',
-          type: 'serial',
-          primaryKey: true
-        }],
+        columns: {
+          my_id: {
+            name: 'my_id',
+            type: 'serial',
+            primaryKey: true
+          }
+        }
       }
 
       // Add a new column to generated by Payload table:
-      schema.rawTables.posts.columns.customColumn = {
+      adapter.rawTables.posts.columns.customColumn = {
         name: 'custom_column',
         // Note that Payload SQL doesn't support everything that Drizzle does.
         type: 'integer',
         notNull: true
       }
       // Add a new index to generated by Payload table:
-      schema.rawTables.posts.indexes.customColumnIdx = {
+      adapter.rawTables.posts.indexes.customColumnIdx = {
         name: 'custom_column_idx',
         unique: true,
         on: ['custom_column']

docs/database/sqlite.mdx

@@ -237,24 +237,26 @@ sqliteAdapter({
   beforeSchemaInit: [
     ({ schema, adapter }) => {
       // Add a new table
-       schema.rawTables.myTable = {
+       adapter.rawTables.myTable = {
         name: 'my_table',
-        columns: [{
-          name: 'my_id',
-          type: 'integer',
-          primaryKey: true
-        }],
+        columns: {
+          my_id: {
+            name: 'my_id',
+            type: 'integer',
+            primaryKey: true
+          }
+        }
       }
 
       // Add a new column to generated by Payload table:
-      schema.rawTables.posts.columns.customColumn = {
+      adapter.rawTables.posts.columns.customColumn = {
         name: 'custom_column',
         // Note that Payload SQL doesn't support everything that Drizzle does.
         type: 'integer',
         notNull: true
       }
       // Add a new index to generated by Payload table:
-      schema.rawTables.posts.indexes.customColumnIdx = {
+      adapter.rawTables.posts.indexes.customColumnIdx = {
         name: 'custom_column_idx',
         unique: true,
         on: ['custom_column']