fix(deep-links): standardize DID parameter name and add route mapping docs

- Change DID schema parameter from 'id' to 'did' for consistency
- Add documentation for deep link route mapping functionality

src/types/deepLinks.ts

@@ -94,7 +94,7 @@ export const deepLinkSchemas = {
     contacts: z.string(), // JSON string of contacts array
   }),
   did: z.object({
-    id: z.string(),
+    did: z.string(),
   }),
 };