Documentation: unify bottom "part of git suite" lines

We currently have 168 man pages that mention they are part of Git, you
can check yourself easily via:
  $ git grep "Part of the linkgit:git\[1\] suite" |wc -l
  168
However some have a trailing period, i.e.
  $ git grep "Part of the linkgit:git\[1\] suite." |wc -l
  8

Unify the bottom line in all man pages to not end with a period.

Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Documentation/gitcore-tutorial.txt

@@ -1658,4 +1658,4 @@ link:user-manual.html[The Git User's Manual]
 
 GIT
 ---
-Part of the linkgit:git[1] suite.
+Part of the linkgit:git[1] suite

Documentation/gitcvs-migration.txt

@@ -199,4 +199,4 @@ link:user-manual.html[The Git User's Manual]
 
 GIT
 ---
-Part of the linkgit:git[1] suite.
+Part of the linkgit:git[1] suite

Documentation/gitdiffcore.txt

@@ -288,4 +288,4 @@ link:user-manual.html[The Git User's Manual]
 
 GIT
 ---
-Part of the linkgit:git[1] suite.
+Part of the linkgit:git[1] suite

Documentation/gitglossary.txt

@@ -24,4 +24,4 @@ link:user-manual.html[The Git User's Manual]
 
 GIT
 ---
-Part of the linkgit:git[1] suite.
+Part of the linkgit:git[1] suite

Documentation/gitrepository-layout.txt

@@ -289,4 +289,4 @@ link:user-manual.html[The Git User's Manual]
 
 GIT
 ---
-Part of the linkgit:git[1] suite.
+Part of the linkgit:git[1] suite

Documentation/gittutorial-2.txt

@@ -433,4 +433,4 @@ link:user-manual.html[The Git User's Manual]
 
 GIT
 ---
-Part of the linkgit:git[1] suite.
+Part of the linkgit:git[1] suite

Documentation/gittutorial.txt

@@ -674,4 +674,4 @@ link:user-manual.html[The Git User's Manual]
 
 GIT
 ---
-Part of the linkgit:git[1] suite.
+Part of the linkgit:git[1] suite

Documentation/gitworkflows.txt

@@ -477,4 +477,4 @@ linkgit:git-am[1]
 
 GIT
 ---
-Part of the linkgit:git[1] suite.
+Part of the linkgit:git[1] suite