some small ch9 fixes

Author: schacon

book/09-git-and-other-scms/sections/client-hg.asc

@@ -10,7 +10,7 @@ The good news, if you prefer Git's client-side behavior but are working with a p
 Since the way Git talks to server repositories is through remotes, it should come as no surprise that this bridge is implemented as a remote helper.
 The project's name is git-remote-hg, and it can be found at https://github.com/felipec/git-remote-hg[].
 
-===== `git-remote-hg`
+===== git-remote-hg
 
 First, you need to install git-remote-hg.
 This basically entails dropping its file somewhere in your path, like so:
@@ -152,7 +152,7 @@ $ git log --oneline --graph --decorate
 * 65bb417 Create a standard "hello, world" program
 ----
 
-Our `master` branch is two commits ahead of `origin\master`, but those two commits exist only on our local machine.
+Our `master` branch is two commits ahead of `origin/master`, but those two commits exist only on our local machine.
 Let's see if anyone else has been doing important work at the same time:
 
 [source,shell]