Merge branch 'ta/docfix-index-format-tech'

* ta/docfix-index-format-tech:
  typofix for index-format.txt

Documentation/technical/index-format.txt

@@ -275,7 +275,7 @@ Git index format
 
     - The directory name terminated by NUL.
 
-    - A number of untrached file/dir names terminated by NUL.
+    - A number of untracked file/dir names terminated by NUL.
 
 The remaining data of each directory block is grouped by type: