Updated version mismatch Info message

Per https://github.com/Microsoft/vscode/issues/13284#issuecomment-252186657

extensions/typescript/src/typescriptServiceClient.ts

@@ -407,7 +407,7 @@ export default class TypeScriptServiceClient implements ITypescriptServiceClient
 					}
 					if (tscVersion && tscVersion !== version) {
 						window.showInformationMessage<MyMessageItem>(
-							localize('versionMismatch', 'A version mismatch between the globally installed tsc compiler ({0}) and VS Code\'s language service ({1}) has been detected. This might result in inconsistent compile errors.', tscVersion, version),
+							localize('versionMismatch', 'Version mismatch! global tsc ({0}) != VS Code\'s language service ({1}). Inconsistent compile errors might occur', tscVersion, version),
 							{
 								title: localize('moreInformation', 'More Information'),
 								id: 1
@@ -720,4 +720,4 @@ export default class TypeScriptServiceClient implements ITypescriptServiceClient
 		}
 		this.logTrace(`Event received: ${event.event} (${event.seq}).`, data);
 	}
-}
+}
\ No newline at end of file