doc: more consistency in environment variables format

Wrap with backticks (monospaced font) unwrapped or single-quotes wrapped
(italic type) environment variables which are followed by the word
"environment". It was obtained with:

perl -pi -e "s/\'?(\\\$?[0-9A-Z\_]+)\'?(?= environment ?)/\`\1\`/g" *.txt

One of the main purposes is to stick to the CodingGuidelines as possible so
that people writting new documentation by mimicking the existing are more likely
to have it right (even if they didn't read the CodingGuidelines).

Signed-off-by: Tom Russello <tom.russello@grenoble-inp.org>
Signed-off-by: Erwan Mathoniere <erwan.mathoniere@grenoble-inp.org>
Signed-off-by: Samuel Groot <samuel.groot@grenoble-inp.org>
Signed-off-by: Matthieu Moy <matthieu.moy@grenoble-inp.fr>
Reviewed-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/Documentation/git-init.txt b/Documentation/git-init.txt
index 8174d27..341a164 100644
--- a/Documentation/git-init.txt
+++ b/Documentation/git-init.txt
@@ -47,7 +47,7 @@ Only print error and warning messages; all other output will be suppressed.
 
 --bare::
 
-Create a bare repository. If GIT_DIR environment is not set, it is set to the
+Create a bare repository. If `GIT_DIR` environment is not set, it is set to the
 current working directory.
 
 --template=<template_directory>::