[devdocsgjs/main: 869/1867] elixir: fix NoMethodError and properly categorize Mix tasks

[Andy Holmes <andyholmes src gnome org>]

commit f9437b2fcc7b158acadc506aec0065e0fd48ff42
Author: Jasper van Merle <jaspervmerle gmail com>
Date:   Thu Aug 22 15:20:26 2019 +0200

    elixir: fix NoMethodError and properly categorize Mix tasks

 lib/docs/filters/elixir/entries.rb | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)
---
diff --git a/lib/docs/filters/elixir/entries.rb b/lib/docs/filters/elixir/entries.rb
index 4b518de2..72794f87 100644
--- a/lib/docs/filters/elixir/entries.rb
+++ b/lib/docs/filters/elixir/entries.rb
@@ -2,7 +2,8 @@ module Docs
   class Elixir
     class EntriesFilter < Docs::EntriesFilter
       def get_name
-        at_css('h1 .app-vsn').remove
+        css('h1 .app-vsn').remove
+
         if current_url.path.start_with?('/getting-started')
           at_css('h1').content.strip.remove(/\.\z/)
         else
@@ -30,6 +31,8 @@ module Docs
           else
             if name.start_with?('Phoenix')
               name.split('.')[0..2].join('.')
+            elsif name.start_with?('mix ')
+              'Mix Tasks'
             else
               name.split('.').first
             end