Fixing a comment in the linux host wrapper script

I noticed this while looking at the exit codes, basically the
comment references a non-existent file.  I fixed it to point
to the correct file.

Change-Id: I5d172c1023fd28705c1957d176b37a9be6a5d32f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2091654
Auto-Submit: Joe Downing <joedow@chromium.org>
Reviewed-by: Yuwei Huang <yuweih@chromium.org>
Commit-Queue: Yuwei Huang <yuweih@chromium.org>
Cr-Commit-Position: refs/heads/master@{#747918}

remoting/host/linux/linux_me2me_host.py

@@ -1702,7 +1702,7 @@ Web Store: https://chrome.google.com/remotedesktop"""
       desktop.host_ready = False
 
       # These exit-codes must match the ones used by the host.
-      # See remoting/host/host_error_codes.h.
+      # See remoting/host/host_exit_codes.h.
       # Delete the host or auth configuration depending on the returned error
       # code, so the next time this script is run, a new configuration
       # will be created and registered.