modules: readme files regenerated - auth_xkeys ... [skip ci]

src/modules/auth_xkeys/README

@@ -171,7 +171,7 @@ auth_xkeys_add("X-My-Key", "abc", "sha256", "$Ri:$fu:$ru:$hdr(CSeq)");
 
    Example 1.3. auth_xkeys_check usage
 ...
-if(!auth_xkeys_add("X-My-Key", "abc", "sha256", "$si:$fu:$ru:$hdr(CSeq)")) {
+if(!auth_xkeys_check("X-My-Key", "abc", "sha256", "$si:$fu:$ru:$hdr(CSeq)")) {
     send_reply("403", "Forbidden");
     exit;
 }