minor #12792 Remove superfluous space (jdreesen)

This PR was merged into the 5.0 branch.

Discussion
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Remove superfluous space

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Commits
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ff0a923 Remove superfluous space

Author: OskarStark

components/string.rst

@@ -211,7 +211,7 @@ Methods to Change Case
 The methods of all string classes are case-sensitive by default. You can perform
 case-insensitive operations with the ``ignoreCase()`` method::
 
-    u('abc')->indexOf('B');               //  null
+    u('abc')->indexOf('B');               // null
     u('abc')->ignoreCase()->indexOf('B'); // 1
 
 Methods to Append and Prepend