[gcc r16-5639] doc: Add --compile-std-module to option summary

[Sandra Loosemore]

https://gcc.gnu.org/g:ca0dea756cd0f85f3fb4fbd9fbdefa1c3de6f85f

commit r16-5639-gca0dea756cd0f85f3fb4fbd9fbdefa1c3de6f85f
Author: Sandra Loosemore <sloosemore@baylibre.com>
Date:   Thu Nov 27 01:25:33 2025 +0000

    doc:  Add --compile-std-module to option summary
    
    Commit 3ad2e2d707c3d6b0c6bd8c3ef0df4f7aaee1c3c added documentation
    for this new C++ option, but missed also adding it to the corresponding
    Option Summary list.
    
    gcc/ChangeLog
            * doc/invoke.texi (Option Summary) <C++ Langauge Options>:
            Add --compile-std-module.

Diff:
---
 gcc/doc/invoke.texi | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index 45317666bc7e..071aa6d65742 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -215,7 +215,8 @@ in the following sections.
 
 @item C++ Language Options
 @xref{C++ Dialect Options,,Options Controlling C++ Dialect}.
-@gccoptlist{-fabi-compat-version=@var{n} -fabi-version=@var{n}
+@gccoptlist{--compile-std-module
+-fabi-compat-version=@var{n} -fabi-version=@var{n}
 -fno-access-control  -faligned-new=@r{[}@var{n}@r{]}
 -fno-assume-sane-operators-new-delete
 -fchar8_t  -fcheck-new