Update cpp/ql/src/Best Practices/GuardedFree.qhelp

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

Author: jketema

cpp/ql/src/Best Practices/GuardedFree.qhelp

@@ -4,7 +4,7 @@
 <qhelp>
 
 <overview>
-<p>The <code>free</code> function, which deallocates heap memory, may accept a NULL pointer and take no action. Therefore, it is unnecessary to check its argument for the value of NULL before a function call to <code>free</code>. As such, these guards may hinder performance and readability.</p>
+<p>The <code>free</code> function, which deallocates heap memory, may accept a NULL pointer and take no action. Therefore, it is unnecessary to check the argument for the value of NULL before a function call to <code>free</code>. As such, these guards may hinder performance and readability.</p>
 </overview>
 
 <recommendation>