Modify the Code of Conduct for Git for Windows

The Git project followed suite and added their Code of Conduct, based on
the Contributors' Covenant v1.4.

We edit it slightly to reflect Git for Windows' particulars.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

Author: dscho

CODE_OF_CONDUCT.md

@@ -1,9 +1,9 @@
-# Git Code of Conduct
+# Git for Windows Code of Conduct
 
 This code of conduct outlines our expectations for participants within
-the Git community, as well as steps for reporting unacceptable behavior.
-We are committed to providing a welcoming and inspiring community for
-all and expect our code of conduct to be honored. Anyone who violates
+the **Git for Windows** community, as well as steps for reporting unacceptable
+behavior. We are committed to providing a welcoming and inspiring community
+for all and expect our code of conduct to be honored. Anyone who violates
 this code of conduct may be banned from the community.
 
 ## Our Pledge
@@ -65,8 +65,8 @@ representative at an online or offline event.
 ## Enforcement
 
 Instances of abusive, harassing, or otherwise unacceptable behavior may be
-reported to the community leaders responsible for enforcement at
-git@sfconservancy.org, or individually:
+reported by contacting the Git for Windows maintainer or the community leaders
+responsible for enforcement at git@sfconservancy.org, or individually:
 
   - Ævar Arnfjörð Bjarmason <avarab@gmail.com>
   - Christian Couder <christian.couder@gmail.com>