Minor fixes to dvelopement doc

doc/development.md

@@ -3,7 +3,8 @@
 This section provide details for those who want to contributes to the development.
 
 ## Translation
-Reference http://babel.edgewall.org/wiki/Documentation/setup.html
+
+Reference <http://babel.edgewall.org/wiki/Documentation/setup.html>
 
 rdiffweb may be translated using `.po` files. This section describe briefly
 how to translate rdiffweb. It's not a complete instruction set, it's merely a reminder.
@@ -15,7 +16,7 @@ Extract the strings to be translated:
 Create a new translation:
 
     python setup.py init_catalog --local fr
-    
+
 Update an existing translation:
 
     python setup.py update_catalog --local fr
@@ -39,4 +40,4 @@ To generate documentation run `tox -e doc`.
 
 It generates HTML documentation in folder `dist/html`
 
-Ref.: https://gist.github.com/johncrossland/9f6f54d559e9136773172aa0a429b46f#pdf-output-from-markdown
+Ref.: <https://gist.github.com/johncrossland/9f6f54d559e9136773172aa0a429b46f#pdf-output-from-markdown>