Fixed typo

ROS.gitignore

-~$
-.swp$
+~
+.swp
 build/
 bin/
 lib/
 msg_gen/
 srv_gen/
-msg/.*Action\.msg$
-msg/.*ActionFeedback\.msg$
-msg/.*ActionGoal\.msg$
-msg/.*ActionResult\.msg$
-msg/.*Feedback\.msg$
-msg/.*Goal\.msg$
-msg/.*Result\.msg$
-msg/_.*\.py$
-
-\.pcd$
-.pyc$
+msg/.*Action\.msg
+msg/.*ActionFeedback\.msg
+msg/.*ActionGoal\.msg
+msg/.*ActionResult\.msg
+msg/.*Feedback\.msg
+msg/.*Goal\.msg
+msg/.*Result\.msg
+msg/_.*\.py
+
+\.pcd
+.pyc
 
 # Generated by dynamic reconfigure
-\.cfgc$
+\.cfgc
 /cfg/cpp/
-/cfg/.*\.py$
+/cfg/.*\.py
 
 # Ignore generated docs
-.dox$
-.wikidoc$
+.dox
+.wikidoc
 
 # eclipse stuff
 .project
@@ -33,9 +33,9 @@ msg/_.*\.py$
 # qcreator stuff
 CMakeLists.txt.user
 
-srv/_.*\.py$
-\.pcd$
-.pyc$
+srv/_.*\.py
+\.pcd
+.pyc
 qtcreator-*
 *.user
 
@@ -43,7 +43,7 @@ qtcreator-*
 /planning/docs
 /planning/src
 
-*~$
+*~
 
 # Emacs
 .#*