minor #16574 Update profiler.rst (derappelt)

This PR was submitted for the 5.4 branch but it was merged into the 4.4 branch instead.

Discussion
----------

Update profiler.rst

The info not to use the profiler in production environments should be highlighted more

Commits
-------

d40fc37 Update profiler.rst

Author: javiereguiluz

profiler.rst

@@ -2,8 +2,12 @@ Profiler
 ========
 
 The profiler is a powerful **development tool** that gives detailed information
-about the execution of any request. **Never** enable the profiler in production
-environments as it will lead to major security vulnerabilities in your project.
+about the execution of any request. 
+
+.. caution::
+
+    **Never** enable the profiler in production environments
+    as it will lead to major security vulnerabilities in your project.
 
 Installation
 ------------