docs: Update links in postgres-sql tool page (#2942)

## Description

Update links to postgres source.md instead of _index.md

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🛠️ Fixes #<issue_number_goes_here>

Author: dishaprakash

docs/en/integrations/postgres/tools/postgres-sql.md

@@ -74,7 +74,7 @@ parameters:
 > including identifiers, column names, and table names. **This makes it more
 > vulnerable to SQL injections**. Using basic parameters only (see above) is
 > recommended for performance and safety reasons. For more details, please check
-> [templateParameters](..#template-parameters).
+> [templateParameters](../../../documentation/configuration/tools/_index.md#template-parameters).
 
 ```yaml
 kind: tool
@@ -103,5 +103,5 @@ templateParameters:
 | source             |                    string                    |     true     | Name of the source the SQL should execute on.                                                                                          |
 | description        |                    string                    |     true     | Description of the tool that is passed to the LLM.                                                                                     |
 | statement          |                    string                    |     true     | SQL statement to execute on.                                                                                                           |
-| parameters         |   [parameters](../#specifying-parameters)    |    false     | List of [parameters](../#specifying-parameters) that will be inserted into the SQL statement.                                          |
-| templateParameters | [templateParameters](..#template-parameters) |    false     | List of [templateParameters](..#template-parameters) that will be inserted into the SQL statement before executing prepared statement. |
+| parameters         |   [parameters](../../../documentation/configuration/tools/_index.md#specifying-parameters)     |    false     | List of [parameters](../../../documentation/configuration/tools/_index.md#specifying-parameters) that will be inserted into the SQL statement.                                          |
+| templateParameters | [templateParameters](../../../documentation/configuration/tools/_index.md#template-parameters) |    false     | List of [templateParameters](../../../documentation/configuration/tools/_index.md#template-parameters) that will be inserted into the SQL statement before executing prepared statement. |