doc: Fixes "branch -b" to "checkout -b"

Signed-off-by: luokexue <luo.kexue@zte.com.cn>

diff --git a/doc/dev/index.rst b/doc/dev/index.rst
index 7a5ce68af9c11c8e6c4971997943b5d1fee8cf3b..55794d644071be20c37f08aed0f087ad00c56e48 100644 (file)
--- a/doc/dev/index.rst
+++ b/doc/dev/index.rst
@@ -479,7 +479,7 @@ Next, create a branch for the bugfix:
 .. code::
 
     $ git checkout master
-    $ git branch -b fix_1
+    $ git checkout -b fix_1
     $ git push -u origin fix_1
 
 This creates a ``fix_1`` branch locally and in our GitHub fork. At this