formatting

Author: EddyVerbruggen

docs/AUTHENTICATION.md

@@ -266,7 +266,7 @@ Then add the following lines to your code and check for setup instructions for y
 			<string>REVERSED_CLIENT_ID</string>
 			<key>CFBundleURLSchemes</key>
 			<array>
-        <string>com.googleusercontent.apps.1052836194035-l81fsjai1u40ocnqjcpnoebnnsltt03b</string>
+				<string>com.googleusercontent.apps.1052836194035-l81fsjai1u40ocnqjcpnoebnnsltt03b</string>
 			</array>
 		</dict>
 	</array>