Update index.mdx (#83)

URL update for filtering log output

website/docs/plugin/log/index.mdx

@@ -18,4 +18,4 @@ Learn how to [implement code in provider logic](/plugin/log/writing) to output l
 
 ### Filtering Log Output
 
-Learn how to [implement code in provider logic](/plugin/log/filter) to mask certain log messages and structured log fields or omit logs entirely.
+Learn how to [implement code in provider logic](/plugin/log/filtering) to mask certain log messages and structured log fields or omit logs entirely.