Update src/connections/auto-instrumentation/web-setup.md

Co-authored-by: stayseesong <83784848+stayseesong@users.noreply.github.com>

Author: alanjcharles

src/connections/auto-instrumentation/web-setup.md

@@ -92,7 +92,7 @@ https://my-website.com?segment_signals_debug=false
 
 ### Advanced
 
-#### Emitting Custom Signals 
+#### Emitting custom signals 
 If you need to listen for data that is unavailable to the Signals plugin by default, you can create and emit a custom signal:
 
 ```ts