Fix typo

Change-Id: Ica38eedeb2733095a1e6d987ad57064cb9be99bd
Reviewed-on: https://gerrit.libreoffice.org/70973
Tested-by: Jenkins
Reviewed-by: Julien Nabet <serval2412@yahoo.fr>

connectivity/source/drivers/mysqlc/mysqlc_subcomponent.hxx

@@ -75,7 +75,7 @@ protected:
                 This method needs to be implemented in derived classes.
                 <BR>
                 The method gets called with s_aMutex acquired.
-                @return                         an pointer to the newly created array helper. Must not be NULL.
+                @return                         a pointer to the newly created array helper. Must not be NULL.
             */
     virtual ::cppu::IPropertyArrayHelper* createArrayHelper() const = 0;
 };