chore: Add comment to common/web/types/src/schema-validators.ts

Author: mcdurdin

common/web/types/src/schema-validators.ts

@@ -8,6 +8,8 @@ import touchLayoutClean from './schemas/keyman-touch-layout.clean.spec.validator
 import touchLayout from './schemas/keyman-touch-layout.spec.validator.mjs';
 import keyboard_info from './schemas/keyboard_info.schema.validator.mjs';
 
+// How to use: https://ajv.js.org/standalone.html#using-the-validation-function-s
+// See also existing uses (search for `SchemaValidators`) for examples.
 const SchemaValidators = {
   kpj,
   kpj90,