docs: move gitremote-helpers into section 7

It is currently in section 1, but that section is intended for
"Executable programs or shell commands".

A more appropriate place is section 7: "Miscellaneous (including macro
packages and conventions), e.g. man(7), groff(7)".

This issue should have been detected earlier by `make check-docs`, but
was missed due to a bug in that Makefile target (that we are about to
fix).

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Documentation/Makefile

@@ -12,7 +12,6 @@ MAN1_TXT += $(filter-out \
 		$(wildcard git-*.txt))
 MAN1_TXT += git.txt
 MAN1_TXT += gitk.txt
-MAN1_TXT += gitremote-helpers.txt
 MAN1_TXT += gitweb.txt
 
 MAN5_TXT += gitattributes.txt
@@ -30,6 +29,7 @@ MAN7_TXT += gitdiffcore.txt
 MAN7_TXT += giteveryday.txt
 MAN7_TXT += gitglossary.txt
 MAN7_TXT += gitnamespaces.txt
+MAN7_TXT += gitremote-helpers.txt
 MAN7_TXT += gitrevisions.txt
 MAN7_TXT += gitsubmodules.txt
 MAN7_TXT += gittutorial-2.txt

Documentation/git-remote-ext.txt

@@ -118,7 +118,7 @@ begins with `ext::`.  Examples:
 
 SEE ALSO
 --------
-linkgit:gitremote-helpers[1]
+linkgit:gitremote-helpers[7]
 
 GIT
 ---

Documentation/git-remote-fd.txt

@@ -52,7 +52,7 @@ EXAMPLES
 
 SEE ALSO
 --------
-linkgit:gitremote-helpers[1]
+linkgit:gitremote-helpers[7]
 
 GIT
 ---

Documentation/git-remote-helpers.txto

@@ -1,7 +1,7 @@
 git-remote-helpers
 ==================
 
-This document has been moved to linkgit:gitremote-helpers[1].
+This document has been moved to linkgit:gitremote-helpers[7].
 
 Please let the owners of the referring site know so that they can update the
 link you clicked to get here.

Documentation/git-remote-testgit.txt

@@ -23,7 +23,7 @@ The best way to learn more is to read the comments and source code in
 
 SEE ALSO
 --------
-linkgit:gitremote-helpers[1]
+linkgit:gitremote-helpers[7]
 
 GIT
 ---

Documentation/gitremote-helpers.txt

@@ -1,4 +1,4 @@
-gitremote-helpers(1)
+gitremote-helpers(7)
 ====================
 
 NAME

Documentation/urls.txt

@@ -62,7 +62,7 @@ may be used:
 
 where <address> may be a path, a server and path, or an arbitrary
 URL-like string recognized by the specific remote helper being
-invoked. See linkgit:gitremote-helpers[1] for details.
+invoked. See linkgit:gitremote-helpers[7] for details.
 
 If there are a large number of similarly-named remote repositories and
 you want to use a different format for them (such that the URLs you