Merge pull request #16053 from sallyom/man-docker-tag

man docker-tag minor fixup

man/docker-tag.1.md

@@ -21,7 +21,10 @@ registry located at `registry-1.docker.io` by default.
 **-f**, **--force**=*true*|*false*
    When set to true, force the alias. The default is *false*.
 
-**REGISTRYHOST**
+**--help**
+   Print usage statement.
+
+**REGISTRY_HOST**
    The hostname of the registry if required. This may also include the port
 separated by a ':'
 
@@ -37,10 +40,6 @@ recommended to be used for a version to distinguish images with the same name.
 Also, for consistency tags should only include a-z0-9-_. .
 Note that here TAG is a part of the overall name or "tag".
 
-# OPTIONS
-**-f**, **--force**=*true*|*false*
-   Force. The default is *false*.
-
 # EXAMPLES
 
 ## Giving an image a new alias