update links (#20797)

docs/README.md

@@ -36,7 +36,7 @@
 - [List of expressions: aggregations and functions](./users-guide/expressions-list.html)
 - [Visualizing data](./users-guide/05-visualizing-results.html)
 - [Using results to ask new questions](./users-guide/referencing-saved-questions-in-queries.html)
-- [Joining data](join.md)
+- [Joining data](./users-guide/join.md)
 
 ### SQL and native queries
 

docs/troubleshooting-guide/bigquery-drive.md

 # Troubleshooting BigQuery and Google Drive connections in Metabase
 
-[This page](../docs/administration-guide/databases/bigquery) explains how to connect a BigQuery data source, including one that uses a file stored in Google Drive, like a Google Sheet (GSheets). 
+[This page](../administration-guide/databases/bigquery) explains how to connect a BigQuery data source, including one that uses a file stored in Google Drive, like a Google Sheet (GSheets). 
 
 ## 403 Forbidden POST error
 
@@ -10,8 +10,8 @@ If you encounter an error that looks like this:
 403 Forbidden POST https://www.googleapis.com/bigquery/v2/projects/PROJECT-NAME/queries { "code" : 403, "errors" : [ { "domain" : "global", "message" : "Access Denied: BigQuery BigQuery: Permission denied while getting Drive credentials.", "reason" : "accessDenied" } ], "message" : "Access Denied: BigQuery BigQuery: Permission denied while getting Drive credentials.", "status" : "PERMISSION_DENIED" }
 ```
 
-You may have forgotten to [share your Google Drive source](../docs/administration-guide/databases/bigquery/#share-your-google-drive-source-with-the-service-account) with the service account email. Once that's been fixed, that error should disappear and you'll be able to view and query your data source.
+You may have forgotten to [share your Google Drive source](../administration-guide/databases/bigquery/#share-your-google-drive-source-with-the-service-account) with the service account email. Once that's been fixed, that error should disappear and you'll be able to view and query your data source.
 
 ## Further reading
 
-You may also want to check out [this troubleshooting guide](datawarehouse) on database connections.
\ No newline at end of file
+You may also want to check out [this troubleshooting guide](datawarehouse) on database connections.