Update docs/platforms/javascript/common/migration/v9-to-v10.mdx

Co-authored-by: Lukas Stracke <[email protected]>

Author: andreiborza

docs/platforms/javascript/common/migration/v9-to-v10.mdx

@@ -25,7 +25,7 @@ Lower versions may continue to work, but may not support all features.
 
 Version 10 of the Sentry SDK has new compatibility ranges for runtimes and frameworks.
 
-#### Node.js
+### Node.js
 
 All OpenTelemetry dependencies have been bumped to `2.x.x` / `0.20x.x` respectively and all OpenTelemetry instrumentations have been upgraded to their latest version.