Add a small bit about the mfh script being able to handle multiple revisions at once.

[wblock]

en_US.ISO8859-1/articles/committers-guide/article.xml

4809 ↗

(On Diff #14317)

"for instance" is not needed.

4810 ↗

(On Diff #14317)

Not sure what "branch was made" means here. Might mean since the branch was created, but might also mean "since it was branched".

4812 ↗

(On Diff #14317)

Comma not needed: s/revisions,/revisions/

4813 ↗

(On Diff #14317)

What is the "right order"? Could it be in the "order they were committed"?

4817 ↗

(On Diff #14317)

Okay, this is a long sentence. It is not clear what has been concatenated--the commit messages? Also, avoid "you".
A couple of shorter sentences would be clearer. Taking a shot at what I think it might mean:

The new commit log message will contain the combined log messages from all the original commits.
These messages must be edited to show what is actually being done with the new commit.