[SPARK-46618][SQL] Improve error messages for DATA_SOURCE_NOT_FOUND e…

…rror

### What changes were proposed in this pull request?

This PR improves the error messages for the `DATA_SOURCE_NOT_FOUND` error.

### Why are the changes needed?

To make the error messages more user-friendly and update to date.

### Does this PR introduce _any_ user-facing change?

No

### How was this patch tested?

Existing unit tests.

### Was this patch authored or co-authored using generative AI tooling?

No

Closes #44620 from allisonwang-db/spark-46618-not-found-err.

Authored-by: allisonwang-db <allison.wang@databricks.com>
Signed-off-by: Max Gekk <max.gekk@gmail.com>

common/utils/src/main/resources/error/error-classes.json

@@ -895,7 +895,7 @@
   },
   "DATA_SOURCE_NOT_FOUND" : {
     "message" : [
-      "Failed to find the data source: <provider>. Please find packages at `https://spark.apache.org/third-party-projects.html`."
+      "Failed to find the data source: <provider>. Make sure the provider name is correct and the package is properly registered and compatible with your Spark version."
     ],
     "sqlState" : "42K02"
   },

docs/sql-error-conditions.md

@@ -496,7 +496,7 @@ Data source '`<provider>`' not found. Please make sure the data source is regist
 
 [SQLSTATE: 42K02](sql-error-conditions-sqlstates.html#class-42-syntax-error-or-access-rule-violation)
 
-Failed to find the data source: `<provider>`. Please find packages at `https://spark.apache.org/third-party-projects.html`.
+Failed to find the data source: `<provider>`. Make sure the provider name is correct and the package is properly registered and compatible with your Spark version.
 
 ### DATA_SOURCE_TABLE_SCHEMA_MISMATCH