Fix typos

phpcs.xml

@@ -17,6 +17,6 @@
     <!--<exclude-pattern>*/other/*</exclude-pattern>-->
     <exclude-pattern>www/assets/*</exclude-pattern>
 
-    <!-- This is the rule we inherit from. If you want to exlude some specific rules, see the docs on how to do that -->
+    <!-- This is the rule we inherit from. If you want to exclude some specific rules, see the docs on how to do that -->
     <rule ref="PSR12"/>
 </ruleset>