fix(server): config saving with layout that includes a dash (mart-e) (#…

…5193)

* [FIX] Accept layout with dash

At least seht-drai and ergo-l is not compatible

* add regex

---------

Co-authored-by: Miodec <jack@monkeytype.com>

backend/src/api/schemas/config-schema.ts

@@ -77,7 +77,11 @@ const CONFIG_SCHEMA = joi.object({
   keymapLegendStyle: joi
     .string()
     .valid("lowercase", "uppercase", "blank", "dynamic"),
-  keymapLayout: joi.string().valid().max(50).token(),
+  keymapLayout: joi
+    .string()
+    .regex(/[\w-_]+/)
+    .valid()
+    .max(50),
   keymapShowTopRow: joi.string().valid("always", "layout", "never"),
   fontFamily: joi
     .string()