docs(debug csrs): fix description

Author: neverlandiz

arch/ext/Sdext.yaml

@@ -14,8 +14,8 @@ versions:
 params:
   MPRVEN_IMPLEMENTED:
     description: |
-      Whether or not the MPRVEN field is implemented.
-      Implementation of the MPRVEN field in DCSR CSR is optional.
+      Whether or not the `MPRVEN` field is implemented.
+      Implementation of `CSR[dcsr].MPRVEN` is optional.
       It may be tied to either 0 or 1.
     schema:
       type: boolean