column, range-diff: downcase option description

It is customary not to begin the help text for each option given to
the parse-options API with a capital letter. Various (sub)commands'
option arrays don't follow the guideline provided by the parse_options
Documentation regarding the descriptions.

Downcase the first word of some option descriptions for "column"
and "range-diff".

Signed-off-by: Chinmoy Chakraborty <chinmoy12c@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

builtin/column.c

@@ -27,10 +27,10 @@ int cmd_column(int argc, const char **argv, const char *prefix)
 		OPT_STRING(0, "command", &real_command, N_("name"), N_("lookup config vars")),
 		OPT_COLUMN(0, "mode", &colopts, N_("layout to use")),
 		OPT_INTEGER(0, "raw-mode", &colopts, N_("layout to use")),
-		OPT_INTEGER(0, "width", &copts.width, N_("Maximum width")),
-		OPT_STRING(0, "indent", &copts.indent, N_("string"), N_("Padding space on left border")),
-		OPT_INTEGER(0, "nl", &copts.nl, N_("Padding space on right border")),
-		OPT_INTEGER(0, "padding", &copts.padding, N_("Padding space between columns")),
+		OPT_INTEGER(0, "width", &copts.width, N_("maximum width")),
+		OPT_STRING(0, "indent", &copts.indent, N_("string"), N_("padding space on left border")),
+		OPT_INTEGER(0, "nl", &copts.nl, N_("padding space on right border")),
+		OPT_INTEGER(0, "padding", &copts.padding, N_("padding space between columns")),
 		OPT_END()
 	};
 

builtin/range-diff.c

@@ -25,7 +25,7 @@ int cmd_range_diff(int argc, const char **argv, const char *prefix)
 	struct option range_diff_options[] = {
 		OPT_INTEGER(0, "creation-factor",
 			    &range_diff_opts.creation_factor,
-			    N_("Percentage by which creation is weighted")),
+			    N_("percentage by which creation is weighted")),
 		OPT_BOOL(0, "no-dual-color", &simple_color,
 			    N_("use simple diff colors")),
 		OPT_PASSTHRU_ARGV(0, "notes", &other_arg,