Update cpp/ql/src/Security/CWE/CWE-193/InvalidPointerDeref.qhelp

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

Author: MathiasVP

cpp/ql/src/Security/CWE/CWE-193/InvalidPointerDeref.qhelp

@@ -13,7 +13,7 @@
   </recommendation>
   <example>
   <p>The first example allocates a buffer of size <code>size</code> and creates a local variable that stores the location that is one byte past the end of the allocation.
-  This local variable is then dereferenced which results in an out-of-bounds write.
+  This local variable is then dereferenced, which results in an out-of-bounds write.
   The second example subtracts one from the <code>end</code> variable before dereferencing it. This subtraction ensures that the write correctly updates the final byte of the allocation.</p>
   <sample src="InvalidPointerDeref.cpp" />