[depot_tools] clarify that new-branch also switch.

The way it was written, it seemed that it behaves as `git branch` instead of `git switch -c`.

R=ajp@google.com

Change-Id: Ibd4a205bd4b537ec7ff7e8235bb7afeee5e88347
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/4514781
Reviewed-by: Joanna Wang <jojwang@chromium.org>
Commit-Queue: Arthur Milchior <arthurmilchior@chromium.org>

man/html/git-new-branch.html

@@ -747,7 +747,7 @@ git-new-branch(1) Manual Page
 <h2>NAME</h2>
 <div class="sectionbody">
 <p>git-new-branch -
-   Create a new branch with correct tracking information.
+  Create and switch to a new branch with correct tracking information.
 </p>
 </div>
 </div>

man/man1/git-new-branch.1

@@ -28,7 +28,7 @@
 .\" * MAIN CONTENT STARTS HERE *
 .\" -----------------------------------------------------------------
 .SH "NAME"
-git-new-branch \- Create a new branch with correct tracking information\&.
+git-new-branch \- Create and switch to a new branch with correct tracking information.\&.
 .SH "SYNOPSIS"
 .sp
 .nf

man/man7/depot_tools.7

@@ -89,7 +89,7 @@ Checkout the upstream branch of the currently checked out branch\&.
 .PP
 \fBgit-new-branch\fR(1)
 .RS 4
-Create a new branch with correct tracking information\&.
+Create and switch to a new branch with correct tracking information.\&.
 .RE
 .PP
 \fBgit-rebase-update\fR(1)

man/src/_git-new-branch_desc.helper.txt

@@ -1 +1 @@
-Create a new branch with correct tracking information.
+Create and switch to a new branch with correct tracking information.