l10n: fr: change "id de clé" to match "id-clé"

At builtin/tag.c:23 French message translation, "<key-id>" was
translated to "<id-clé>", but at builtin/tag.c:355 "key-id" was
translated to "id de clé", hence an inconsistency in git tag -h output.

Translate "key-id" to "id-clé".
Alternatively, both places could use "id de clé" instead of "id-clé".

Signed-off-by: Vasco Almeida <vascomalmeida@sapo.pt>

po/fr.po

diff --git a/po/fr.po b/po/fr.po
index b8fe1f0..868514e 100644
--- a/po/fr.po
+++ b/po/fr.po
@@ -2945,7 +2945,7 @@
 #: builtin/am.c:2321 builtin/commit.c:1593 builtin/merge.c:225
 #: builtin/pull.c:159 builtin/revert.c:92 builtin/tag.c:355
 msgid "key-id"
-msgstr "id de clé"
+msgstr "id-clé"
 
 #: builtin/am.c:2322
 msgid "GPG-sign commits"