Fix comment in grpc-google-cloud-firestore-v1 POM (#4717)

Fixing a copy&paste typo

Author: schmidt-sebastian

google-api-grpc/grpc-google-cloud-firestore-v1/pom.xml

@@ -3,7 +3,7 @@
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
     <artifactId>grpc-google-cloud-firestore-v1</artifactId>
-    <version>0.49.1-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-firestore-v1beta1:current} -->
+    <version>0.49.1-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-firestore-v1:current} -->
     <name>grpc-google-cloud-firestore-v1</name>
     <description>GRPC library for grpc-google-cloud-firestore-v1</description>
     <parent>
@@ -28,4 +28,4 @@
             <scope>compile</scope>
         </dependency>
     </dependencies>
-</project>
+</project>