updating error code for too many parts from 600 to 252

Author: adam-peavey-ch

knowledgebase/exception-too-many-parts.mdx

@@ -9,7 +9,7 @@ keywords: ['Too many parts']
 {frontMatter.description}
 {/* truncate */}
 
-## DB::Exception: Too many parts (600). Merges are processing significantly slower than inserts {#dbexception-too-many-parts-600-merges-are-processing-significantly-slower-than-inserts}
+## DB::Exception: Too many parts (Error: 252). Merges are processing significantly slower than inserts {#dbexception-too-many-parts-252-merges-are-processing-significantly-slower-than-inserts}
 
 You reached the `parts_to_throw_insert` setting on a MergeTree table.