doc/SubmittingPatches: clarify the casing convention for "area: change..."

Amend the section which describes how the first line of the subject should look like to say that the ":" in "area: " shouldn't be treated like a full stop for the purposes of letter casing. Change the two subject examples to make this new paragraph clearer, i.e. "unstar" is not a common word, and "git-cherry-pick.txt" is a much longer string than "githooks.txt". Pick two recent commits from git.git that fit better for the description. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>

Ævar Arnfjörð Bjarmason committed Mar 21, 2017 at 14:21 UTC 2ee0056779a7fb736092fc78de10b7e908f46f25
1 file changed +7 -2
Documentation/SubmittingPatches
+7 -2
@@ -98,12 +98,17 @@ should skip the full stop. It is also conventional in most cases to
98 prefix the first line with "area: " where the area is a filename or
99 identifier for the general area of the code being modified, e.g.
100
101 - . archive: ustar header checksum is computed unsigned
102 - . git-cherry-pick.txt: clarify the use of revision range notation
101 + . doc: clarify distinction between sign-off and pgp-signing
102 + . githooks.txt: improve the intro section
103
104 If in doubt which identifier to use, run "git log --no-merges" on the
105 files you are modifying to see the current conventions.
106
107 +It's customary to start the remainder of the first line after "area: "
108 +with a lower-case letter. E.g. "doc: clarify...", not "doc:
109 +Clarify...", or "githooks.txt: improve...", not "githooks.txt:
110 +Improve...".
111 +
112 The body should provide a meaningful commit message, which:
113
114 . explains the problem the change tries to solve, iow, what is wrong