[PATCH] new-command.txt: update reference to builtin docs

["Wes Lord via GitGitGadget" <gitgitgadget@gmail.com>]

From: Wes Lord <weslord@gmail.com>

Commit ec14d4ecb5 (builtin.h: take over documentation from
api-builtin.txt, 2017-08-02) deleted api-builtin.txt and moved the
contents into builtin.h, but new-command.txt still references the old
file.

Signed-off-by: Wes Lord <weslord@gmail.com>
---
    new-command.txt: update reference to builtin docs

Published-As: https://github.com/gitgitgadget/git/releases/tag/pr-git-1451%2Fweslord%2Fdoc-builtin-v1
Fetch-It-Via: git fetch https://github.com/gitgitgadget/git pr-git-1451/weslord/doc-builtin-v1
Pull-Request: https://github.com/git/git/pull/1451

 Documentation/howto/new-command.txt | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Documentation/howto/new-command.txt b/Documentation/howto/new-command.txt
index 15a4c8031f1..880c51112ba 100644
--- a/Documentation/howto/new-command.txt
+++ b/Documentation/howto/new-command.txt
@@ -1,13 +1,13 @@
 From: Eric S. Raymond <esr@thyrsus.com>
 Abstract: This is how-to documentation for people who want to add extension
- commands to Git.  It should be read alongside api-builtin.txt.
+ commands to Git.  It should be read alongside builtin.h.
 Content-type: text/asciidoc
 
 How to integrate new subcommands
 ================================
 
 This is how-to documentation for people who want to add extension
-commands to Git.  It should be read alongside api-builtin.txt.
+commands to Git.  It should be read alongside builtin.h.
 
 Runtime environment
 -------------------

base-commit: 2fc9e9ca3c7505bc60069f11e7ef09b1aeeee473
-- 
gitgitgadget