Fix typos in the documentation.

Signed-off-by: Ralf Wildenhues <Ralf.Wildenhues@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Documentation/RelNotes-1.6.1.txt

@@ -55,9 +55,9 @@ on.
   to a non-zero value to accept the suggestion when git can uniquely
   guess.
 
-* The packfile machinery hopefully is more robust when dealilng with
+* The packfile machinery hopefully is more robust when dealing with
   corrupt packs if redundant objects involved in the corruption are
-  available elsehwere.
+  available elsewhere.
 
 * "git add -N path..." adds the named paths as an empty blob, so that
   subsequent "git diff" will show a diff as if they are creation events.
@@ -157,7 +157,7 @@ on.
 * "git log" learned "--source" to show what ref each commit was reached
   from.
 
-* "git log" also learned "--simplify-by-decration" to show the
+* "git log" also learned "--simplify-by-decoration" to show the
   birds-eye-view of the topology of the history.
 
 * "git log --pretty=format:" learned "%d" format element that inserts

Documentation/config.txt

@@ -820,7 +820,7 @@ gui.fastcopyblame::
 	repositories at the expense of less thorough copy detection.
 
 gui.copyblamethreshold::
-	Specifies the theshold to use in 'git gui blame' original location
+	Specifies the threshold to use in 'git gui blame' original location
 	detection, measured in alphanumeric characters. See the
 	linkgit:git-blame[1] manual for more information on copy detection.
 

Documentation/git-add.txt

@@ -98,7 +98,7 @@ OPTIONS
 	Record only the fact that the path will be added later. An entry
 	for the path is placed in the index with no content. This is
 	useful for, among other things, showing the unstaged content of
-	such files with 'git diff' and commiting them with 'git commit
+	such files with 'git diff' and committing them with 'git commit
 	-a'.
 
 --refresh::