Update c-sharp-quickstart.md

Removed extra spacing after uriBase

Author: hnky

articles/cognitive-services/Labs/Answer-Search/c-sharp-quickstart.md

@@ -49,7 +49,7 @@ namespace Answers_csharp
         // Replace the accessKey string value with your valid access key.
         const string accessKey = "YOUR-SUBSCRIPTION-KEY";
 
-        const string uriBase = "https://api.labs.cognitive.microsoft.com/answerSearch/v7.0/search "; 
+        const string uriBase = "https://api.labs.cognitive.microsoft.com/answerSearch/v7.0/search"; 
 
         const string searchTerm = "third law of calculus";