fix: pageLimit only accepts certain numbers

Signed-off-by: Enrico Alvarenga <enricomalvarenga@gmail.com>

.changeset/nasty-forks-beg.md

@@ -11,3 +11,5 @@ app:
     initialState:
       pageLimit: 50
 ```
+
+Acceptable values for `pageLimit` are `10`, `25`, `50` or `100`.

plugins/search/README.md

@@ -20,6 +20,8 @@ app:
       pageLimit: 50
 ```
 
+Acceptable values for `pageLimit` are `10`, `25`, `50` or `100`.
+
 ### Areas of Responsibility
 
 This search plugin is primarily responsible for the following:

plugins/search/config.d.ts

@@ -33,7 +33,7 @@ export interface Config {
          *
          * @visibility frontend
          */
-        pageLimit?: number;
+        pageLimit?: 10 | 25 | 50 | 100;
       };
     };
   };