tree-wide: Drop custom formatting for print() help messages

I think this formatting was originally used because it simplified
adding new options to the help messages. However, these days, most
tools their help message end with "\nSee the %s for details.\n" so
the final line almost never has to be edited which eliminates the
benefit of the custom formatting used for printf() help messages.
Let's make things more consistent and use the same formatting for
printf() help messages that we use everywhere else.

Prompted by https://github.com/systemd/systemd/pull/18355#discussion_r567241580

src/boot/bless-boot.c

@@ -42,12 +42,11 @@ static int help(int argc, char *argv[], void *userdata) {
                "  -h --help          Show this help\n"
                "     --version       Print version\n"
                "     --path=PATH     Path to the $BOOT partition (may be used multiple times)\n"
-               "\nSee the %s for details.\n"
-               , program_invocation_short_name
-               , ansi_highlight()
-               , ansi_normal()
-               , link
-        );
+               "\nSee the %s for details.\n",
+               program_invocation_short_name,
+               ansi_highlight(),
+               ansi_normal(),
+               link);
 
         return 0;
 }

src/boot/boot-check-no-failures.c

@@ -27,12 +27,11 @@ static int help(void) {
                "\n%sVerify system operational state.%s\n\n"
                "  -h --help          Show this help\n"
                "     --version       Print version\n"
-               "\nSee the %s for details.\n"
-               , program_invocation_short_name
-               , ansi_highlight()
-               , ansi_normal()
-               , link
-        );
+               "\nSee the %s for details.\n",
+               program_invocation_short_name,
+               ansi_highlight(),
+               ansi_normal(),
+               link);
 
         return 0;
 }

src/boot/bootctl.c

@@ -1043,12 +1043,13 @@ static int help(int argc, char *argv[], void *userdata) {
                "     --no-pager        Do not pipe output into a pager\n"
                "     --graceful        Don't fail when the ESP cannot be found or EFI\n"
                "                       variables cannot be written\n"
-               "\nSee the %2$s for details.\n"
-               , program_invocation_short_name
-               , link
-               , ansi_underline(), ansi_normal()
-               , ansi_highlight(), ansi_normal()
-        );
+               "\nSee the %2$s for details.\n",
+               program_invocation_short_name,
+               link,
+               ansi_underline(),
+               ansi_normal(),
+               ansi_highlight(),
+               ansi_normal());
 
         return 0;
 }