Omnisharp option messaging change (#5979)

Author: arunchndr

package.json

@@ -889,7 +889,7 @@
           "dotnet.server.useOmnisharp": {
             "type": "boolean",
             "default": false,
-            "description": "Switches to use the Omnisharp server for language features when enabled (requires restart). This option will not work with C# Dev Kit.",
+            "description": "Switches to use the Omnisharp server for language features when enabled (requires restart). This option will not be honored with C# Dev Kit installed.",
             "order": 0
           },
           "csharp.format.enable": {