bugfix for using diff-so-fancy as git diff with my config

There's a bug in diff-so-fancy which breaks when used as git diff with
some values in my git config colors

I commented it out.  The issue is being worked on in diff-so-fance

so-fancy/diff-so-fancy#438

Author: ofus

git/gitconfig.symlink

@@ -116,15 +116,15 @@
     current = green bold
     local = green
     remote = red bold
-[color "diff"]
-    meta = yellow bold
-    frag = magenta bold
-    plain = white bold
-    old = red bold reverse
-    new = green bold reverse
-    commit = yellow bold
-    func = green dim
-    whitespace = white reverse
+#[color "diff"]                     comment out due to bug https://github.com/so-fancy/diff-so-fancy/issues/438 
+#    meta = yellow bold
+#    frag = magenta bold
+#    plain = white bold
+#    old = red bold reverse
+#    new = green bold reverse
+#    commit = yellow bold
+#    func = green dim
+#    whitespace = white reverse
 [color "status"]
     added = yellow
     changed = green