docs(phpcs): Fix typo in comment about comments with 2 dots

Author: eiriksm

coder_sniffer/Drupal/ruleset.xml

@@ -127,7 +127,7 @@
   <rule ref="SlevomatCodingStandard.Commenting.ForbiddenComments">
     <properties>
        <property name="forbiddenCommentPatterns" type="array">
-         <!-- Catch comments ending in 2 dots, bot leave comments ending in 3
+         <!-- Catch comments ending in 2 dots, but leave comments ending in 3
          dots alone. -->
          <element value="/(?&lt;!\.)\.\.(?!\.)$/"/>
        </property>