cmGlobalVisualStudio7Generator: Update outdated comment

Source/cmGlobalVisualStudio7Generator.cxx

@@ -299,7 +299,7 @@ void cmGlobalVisualStudio7Generator::Generate()
   // first do the superclass method
   this->cmGlobalVisualStudioGenerator::Generate();
 
-  // Now write out the DSW
+  // Now write out the VS Solution file.
   this->OutputSLNFile();
   // If any solution or project files changed during the generation,
   // tell Visual Studio to reload them...

Source/cmGlobalVisualStudio7Generator.h

@@ -83,7 +83,7 @@ public:
       std::vector<std::string>()) override;
 
   /**
-   * Generate the DSW workspace file.
+   * Generate the VS Solution file.
    */
   virtual void OutputSLNFile();