Update Program.cs

Author: SimonCropp

src/DiffEngineWord/Program.cs

@@ -59,6 +59,10 @@
 // Mark as saved so Word won't prompt to save on close
 comparedDoc.Saved = true;
 
+// Disable spelling and grammar checks
+comparedDoc.ShowSpellingErrors = false;
+comparedDoc.ShowGrammaticalErrors = false;
+
 word.Visible = true;
 
 return 0;