man: more Mercurial references changed to Git

Change-Id: I940a21d67b21b5dd139cb20b9fae9595506fc5ae

man/man1/0intro.1

diff --git a/man/man1/0intro.1 b/man/man1/0intro.1
index 1c1ac3b..f018fc8 100644
--- a/man/man1/0intro.1
+++ b/man/man1/0intro.1
@@ -308,7 +308,7 @@
 in
 .IR acid (1),
 .IR dial (1),
-.IR hg (1),
+.IR git (1),
 .IR label (1),
 the
 .B MKSHELL

man/man1/git.1

diff --git a/man/man1/git.1 b/man/man1/git.1
index 2cedace..19f2a10 100644
--- a/man/man1/git.1
+++ b/man/man1/git.1
@@ -72,7 +72,7 @@
 .SH FILES
 .TP
 .B \*9/.git
-directory containing Mercurial local repository
+directory containing Git local repository
 .TP
 .B .gitignore
 list of files and wildcards to exclude from Git operations

man/man1/install.1

diff --git a/man/man1/install.1 b/man/man1/install.1
index 43ac8aa..574bdc5 100644
--- a/man/man1/install.1
+++ b/man/man1/install.1
@@ -13,9 +13,9 @@
 .I path
 ]
 .SH DESCRIPTION
-To obtain the Plan 9 tree, use Mercurial
+To obtain the Plan 9 tree, use Git
 (see
-.IR hg (1))
+.IR git (1))
 or download a tar file from
 .HR http://swtch.com/plan9port "" .
 .PP
@@ -151,4 +151,4 @@
 .B install.log
 .SH SEE ALSO
 .IR intro (1),
-.IR hg (1)
+.IR git (1)