Update index.md

Author: robfatland

index.md

@@ -39,8 +39,8 @@ The use of keywords is intended to remind one of the page's detailed focus.
 
 
 - [nexus root](https://github.com/robfatland/nexus/blob/gh-pages/index.md) (Level 1)
-    - [lexicon](https://github.com/robfatland/nexus/blob/gh-pages/lexicon.md) (Level 1+)
-    - [loose strands (a ttdl)](https://github.com/robfatland/nexus/blob/gh-pages/loosestrands.md) (Level 1+)
+  - [lexicon](https://github.com/robfatland/nexus/blob/gh-pages/lexicon.md) (Level 1+)
+  - [loose strands (a ttdl)](https://github.com/robfatland/nexus/blob/gh-pages/loosestrands.md) (Level 1+)
     - [bash](https://github.com/robfatland/nexus/blob/gh-pages/bash/index.md) (Level 2) 
         - [environments](https://github.com/robfatland/nexus/blob/gh-pages/bash/env.md) (Level 3)
         - [git and GitHub](https://github.com/robfatland/nexus/blob/gh-pages/bash/git.md) (Level 3)