fixed smart quotes

Podfile

@@ -1,13 +1,13 @@
 target 'sampleapp-ios-swift' do
   use_frameworks!
 
-  pod 'MobileCenter’
+  pod 'MobileCenter'
   pod 'MobileCenter/Push'
   
-  target ‘sampleapp-ios-swiftUITests’ do
+  target 'sampleapp-ios-swiftUITests' do
     inherit! :search_paths
     # Pods for testing
-    pod ‘VSMobileCenterExtensions’
+    pod 'VSMobileCenterExtensions'
   end
 
 end