Apply code review feedback and fix test

Author: dsplaisted

src/Cli/dotnet/commands/dotnet-workload/install/LocalizableStrings.resx

@@ -327,7 +327,7 @@
   </data>
   <data name="CannotUseSkipManifestWithGlobalJsonWorkloadVersion" xml:space="preserve">
     <value>Cannot use the {0} option when workload version is specified in global.json.  Remove the {0} option, or remove the 'workloadVersion' element from {1}.</value>
-    <comment>"workloadVersion" is a literal value and should not be translated.</comment>
+    <comment>"workloadVersion" and "global.json" are literal values and should not be translated.</comment>
   </data>
   <data name="SkipSignCheckOptionDescription" xml:space="preserve">
     <value>Skip signature verification of workload packages and installers.</value>
@@ -360,6 +360,6 @@
     <value>Successfully updated workload install mode to use {0}.</value>
   </data>
   <data name="FailedToInstallWorkloadSet" xml:space="preserve">
-    <value>Failed to install workload set version {0}: {1}</value>
+    <value>Failed to install workload version {0}: {1}</value>
   </data>
 </root>