[gcc r13-4290] c++: Further -fcontract* option description fixes

[gcc r13-4290] c++: Further -fcontract* option description fixes

[Jakub Jelinek]

https://gcc.gnu.org/g:138ee8f7453ffdd6856caf35cf32be6661086a54

commit r13-4290-g138ee8f7453ffdd6856caf35cf32be6661086a54
Author: Jakub Jelinek <jakub@redhat.com>
Date:   Thu Nov 24 11:51:34 2022 +0100

    c++: Further -fcontract* option description fixes
    
    During testing I've missed my previous patch just changed:
    -FAIL: compiler driver --help=c++ option(s): "^ +-.*[^:.]\$" absent from output: "  -fcontract-build-level=[off|default|audit] Specify max contract level to generate runtime checks for"
    +FAIL: compiler driver --help=c++ option(s): "^ +-.*[^:.]\$" absent from output: "  -fcontract-role=<name>:<semantics> Specify the semantics for all levels in a role (default, review), or a custom contract role with given semantics (ex: opt:assume,assume,assume)"
    rather than actually fixed it, the test only reports the first such problem.
    
    This patch fixes the remaining ones.
    
    2022-11-24  Jakub Jelinek  <jakub@redhat.com>
    
            * c.opt (fcontract-role=, fcontract-semantic=): Terminate descriptions
            with a dot.

Diff:
---
 gcc/c-family/c.opt | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/gcc/c-family/c.opt b/gcc/c-family/c.opt
index 4b0539132c6..0d0ad0a6374 100644
--- a/gcc/c-family/c.opt
+++ b/gcc/c-family/c.opt
@@ -1713,11 +1713,11 @@ C++ Joined RejectNegative
 
 fcontract-role=
 C++ Joined RejectNegative
--fcontract-role=<name>:<semantics>	Specify the semantics for all levels in a role (default, review), or a custom contract role with given semantics (ex: opt:assume,assume,assume)
+-fcontract-role=<name>:<semantics>	Specify the semantics for all levels in a role (default, review), or a custom contract role with given semantics (ex: opt:assume,assume,assume).
 
 fcontract-semantic=
 C++ Joined RejectNegative
--fcontract-semantic=<level>:<semantic>	Specify the concrete semantics for level
+-fcontract-semantic=<level>:<semantic>	Specify the concrete semantics for level.
 
 fcoroutines
 C++ LTO Var(flag_coroutines)