[Fetch] Fix comment develop/fetch --> master

Author: tkmtnt7000

jsk_fetch_robot/jsk_fetch.rosinstall.melodic

@@ -66,7 +66,7 @@
 # - git:
 #     local-name: jsk-ros-pkg/jsk_pr2eus
 #     uri: https://github.com/jsk-ros-pkg/jsk_pr2eus.git
-#     version: develop/fetch
+#     version: master
 - git:
     local-name: jsk-ros-pkg/jsk_pr2eus
     uri: https://github.com/jsk-ros-pkg/jsk_pr2eus.git