adb: fix adb reverse --no-rebind help text

There was a typo in the option.

Change-Id: I5c074a883a7b384663ed65cd8de0d891dc2b6606
Signed-off-by: Spencer Low <CompareAndSwap@gmail.com>
diff --git a/commandline.cpp b/commandline.cpp
index 37bd777..a48c992 100644
--- a/commandline.cpp
+++ b/commandline.cpp
@@ -138,7 +138,7 @@
         "                                   localabstract:<unix domain socket name>\n"
         "                                   localreserved:<unix domain socket name>\n"
         "                                   localfilesystem:<unix domain socket name>\n"
-        "  adb reverse --norebind <remote> <local>\n"
+        "  adb reverse --no-rebind <remote> <local>\n"
         "                               - same as 'adb reverse <remote> <local>' but fails\n"
         "                                 if <remote> is already reversed.\n"
         "  adb reverse --remove <remote>\n"