Fix some links in the doc from the latest commit

Ref #142

.gitignore

@@ -11,19 +11,6 @@ Session.vim
 .netrwhist
 *~
 
-# Packages
-##############################
-# it's better to unpack these files and commit the raw source
-# git has its own built in compression methods
-*.7z
-*.dmg
-*.gz
-*.iso
-*.jar
-*.rar
-*.tar
-*.zip
-
 # OS generated files
 ##############################
 .DS_Store

doc/vimwiki.txt

@@ -2623,7 +2623,7 @@ Your help in making vimwiki better is really appreciated!
 Any help, whether it is a spelling correction or a code snippet to patch --
 everything is welcomed.
 
-Issues can be filed at https://github.com/vimwiki/vimwiki.git .
+Issues can be filed at https://github.com/vimwiki/vimwiki/issues/ .
 
 
 ==============================================================================
@@ -2637,7 +2637,7 @@ Issues can be filed at https://github.com/vimwiki/vimwiki.git .
         http://code.google.com/p/vimwiki/people/list
 
 Web: https://github.com/vimwiki/vimwiki.git
-Issues: https://github.com/vimwiki/vimwiki/issues
+Mail-List: https://groups.google.com/forum/#!forum/vimwiki
 Vim plugins: http://www.vim.org/scripts/script.php?script_id=2226