TRANSLATING: Add note about commit message.

Signed-off-by: Loui Chang <louipc.ist@gmail.com>

TRANSLATING

@@ -16,7 +16,7 @@ aur-dev@archlinux.org
 Creating a New Translation
 ---------------------------
 
-Before beginning, please make sure that git and python are installed. 
+Before beginning, please make sure that git and python are installed.
 Also, please do not translate if you are unwilling to maintain or find
 someone to maintain the translation. This is due to the fact that the
 AUR is a rapidly evolving project and there are constantly new strings
@@ -24,7 +24,7 @@ to be translated. If the translations get too out of sync with the
 released versions, there will be too many untranslated strings for the
 translation to be usable, and it may have to be disabled.
 
-1. Check out the AUR source using git. 
+1. Check out the AUR source using git.
 
 $ git clone git://projects.archlinux.org/aur.git aur-git
 
@@ -33,7 +33,7 @@ $ git clone git://projects.archlinux.org/aur.git aur-git
    process, simply answer its questions and prompts. If you wish to stop
    at some point during the translation, you may kill translation_tool
    using Ctrl+C. If you later wish to continue the translation, simply
-   run translation_tool again, and it will continue from where you left off. 
+   run translation_tool again, and it will continue from where you left off.
 
 $ cd aur-git
 $ git checkout master
@@ -41,11 +41,14 @@ $ git pull
 $ cd web/lang
 $ ./translation_tool
 
-3. To commit your patch to your branch: 
+3. To commit your patch to your branch:
 
 $ git add <all edited files>
 $ git commit -s
 
+Write your commit message above the sign off and separate them by a
+blank line.
+
 4. Create a git formatted patch.
 
 $ git format-patch origin/master
@@ -56,18 +59,18 @@ $ git format-patch origin/master
 Updating an Existing Translation
 ---------------------------------
 
-1. Update your copy of the AUR code. 
+1. Update your copy of the AUR code.
 
 $ cd aur-git
 $ git pull
 
 2. Run translation_tool, which will only prompts for strings that have
-   changed or been added since the last translation. 
+   changed or been added since the last translation.
 
 $ cd web/lang
 $ ./translation_tool
 
-3. To commit your patch to your branch: 
+3. To commit your patch to your branch:
 
 $ git add <all edited files>
 $ git commit -s