Documentation: fix typos in man pages

Signed-off-by: Øystein Walle <oystwa@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Documentation/git-clone.txt

@@ -213,7 +213,7 @@ objects from the source repository into a pack in the cloned repository.
 --separate-git-dir=<git dir>::
 	Instead of placing the cloned repository where it is supposed
 	to be, place the cloned repository at the specified directory,
-	then make a filesytem-agnostic Git symbolic link to there.
+	then make a filesystem-agnostic Git symbolic link to there.
 	The result is Git repository can be separated from working
 	tree.
 

Documentation/git-diff.txt

@@ -44,7 +44,7 @@ two blob objects, or changes between two files on disk.
 	commit relative to the named <commit>.  Typically you
 	would want comparison with the latest commit, so if you
 	do not give <commit>, it defaults to HEAD.
-	If HEAD does not exist (e.g. unborned branches) and
+	If HEAD does not exist (e.g. unborn branches) and
 	<commit> is not given, it shows all staged changes.
 	--staged is a synonym of --cached.
 

Documentation/gitcli.txt

@@ -28,7 +28,7 @@ arguments.  Here are the rules:
    they can be disambiguated by placing `--` between them.
    E.g. `git diff -- HEAD` is, "I have a file called HEAD in my work
    tree.  Please show changes between the version I staged in the index
-   and what I have in the work tree for that file". not "show difference
+   and what I have in the work tree for that file", not "show difference
    between the HEAD commit and the work tree as a whole".  You can say
    `git diff HEAD --` to ask for the latter.
 

Documentation/gitweb.conf.txt

@@ -630,13 +630,13 @@ need to set this element to empty list i.e. `[]`.
 
 override::
 	If this field has a true value then the given feature is
-	overriddable, which means that it can be configured
+	overridable, which means that it can be configured
 	(or enabled/disabled) on a per-repository basis.
 +
 Usually given "<feature>" is configurable via the `gitweb.<feature>`
 config variable in the per-repository Git configuration file.
 +
-*Note* that no feature is overriddable by default.
+*Note* that no feature is overridable by default.
 
 sub::
 	Internal detail of implementation.  What is important is that

Documentation/user-manual.txt

@@ -3795,7 +3795,7 @@ like so:
 $ git update-index filename
 -------------------------------------------------
 
-but to avoid common mistakes with filename globbing etc, the command
+but to avoid common mistakes with filename globbing etc., the command
 will not normally add totally new entries or remove old entries,
 i.e. it will normally just update existing cache entries.