[evolution-data-server] M!64 - Fix variable reference in e_source_mail_identity_set_signature_uid docs

[Milan Crha <mcrha src gnome org>]

commit db269de6c5ebf6cd6f8f35f2f343284aa54281c2
Author: Michael McClurg <michael mcclurg outlook com>
Date:   Mon Jan 18 16:38:09 2021 +0000

    M!64 - Fix variable reference in e_source_mail_identity_set_signature_uid docs
    
    Closes https://gitlab.gnome.org/GNOME/evolution-data-server/-/merge_requests/64

 src/libedataserver/e-source-mail-identity.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/libedataserver/e-source-mail-identity.c b/src/libedataserver/e-source-mail-identity.c
index 3fcb927bf..87ec5693c 100644
--- a/src/libedataserver/e-source-mail-identity.c
+++ b/src/libedataserver/e-source-mail-identity.c
@@ -687,7 +687,7 @@ e_source_mail_identity_dup_signature_uid (ESourceMailIdentity *extension)
  * If the user does not want to use a signature for this identity, the
  * convention is to set the #ESourceMailIdentity:signature-uid property
  * to "none".  In keeping with that convention, the property will be set
- * to "none" if @signature is %NULL or an empty string.
+ * to "none" if @signature_uid is %NULL or an empty string.
  *
  * Since: 3.6
  **/