Fix double singule quote error in fcm gradle

Author: rlazo

firebase-messaging/firebase-messaging.gradle

@@ -116,7 +116,7 @@ dependencies {
     testImplementation 'junit:junit:4.13-beta-2'
     testImplementation 'org.mockito:mockito-core:2.25.0'
     testImplementation "com.google.truth:truth:$googleTruthVersion"
-    testImplementation 'com.google.android.gms:play-services-vision:20.1.3''
+    testImplementation 'com.google.android.gms:play-services-vision:20.1.3'
     testImplementation ("com.google.firebase:firebase-iid:21.1.0") {
         exclude group: "com.google.firebase", module: "firebase-common"
         exclude group: "com.google.firebase", module: "firebase-components"