Merge branch 'jc/linkgit-fix'

Many 'linkgit:<git documentation page>' references were broken,
which are all fixed with this.

* jc/linkgit-fix:
Documentation: fix linkgit references

diff --cc Documentation/config.txt
index e7184103500113dba401e0a0e85876cf2fe366b6,4b57519e42c084e582e4f4625d993613c00e22f0..3127aed1d8125f1ad85f5cbb8651091de14286e0
--- 1/Documentation/config.txt
--- 2/Documentation/config.txt
+++ b/Documentation/config.txt
@@@ -1680,19 -1654,12 +1680,19 @@@ http.emptyAuth:
        a username in the URL, as libcurl normally requires a username for
        authentication.
  
 +http.extraHeader::
 +      Pass an additional HTTP header when communicating with a server.  If
 +      more than one such entry exists, all of them are added as extra
 +      headers.  To allow overriding the settings inherited from the system
 +      config, an empty value will reset the extra headers to the empty list.
 +
  http.cookieFile::
 -      File containing previously stored cookie lines which should be used
 +      The pathname of a file containing previously stored cookie lines,
 +      which should be used
        in the Git http session, if they match the server. The file format
        of the file to read cookies from should be plain HTTP headers or
-       the Netscape/Mozilla cookie file format (see linkgit:curl[1]).
+       the Netscape/Mozilla cookie file format (see `curl(1)`).
 -      NOTE that the file specified with http.cookieFile is only used as
 +      NOTE that the file specified with http.cookieFile is used only as
        input unless http.saveCookies is set.
  
  http.saveCookies::