Improved error message for DOC207

Author: sharwell

DocumentationAnalyzers/DocumentationAnalyzers/PortabilityRules/PortabilityResources.Designer.cs

@@ -178,10 +178,10 @@
     <value>Use inline elements correctly</value>
   </data>
   <data name="DOC207Description" xml:space="preserve">
-    <value>Use 'see langword' correctly</value>
+    <value>'langword' attribute value should be a language keyword</value>
   </data>
   <data name="DOC207MessageFormat" xml:space="preserve">
-    <value>Use 'see langword' correctly</value>
+    <value>'langword' attribute value should be a language keyword</value>
   </data>
   <data name="DOC207Title" xml:space="preserve">
     <value>Use 'see langword' correctly</value>