Update user_guide_src/source/libraries/caching.rst

Co-authored-by: kenjis <[email protected]>

Author: ddevsr

user_guide_src/source/libraries/caching.rst

@@ -19,7 +19,7 @@ The following example shows a common usage pattern within your controllers.
 
 .. literalinclude:: caching/001.php
 
-You can grab an instance of the cache engine directly through the global function service:
+You can grab an instance of the cache engine directly through the global function ``service()``:
 
 .. literalinclude:: caching/002.php