Issue #3411001 by sijumpk: Schema for search_fields is in deprecated format

config/schema/entity_reference_revisions.schema.yml

@@ -8,7 +8,7 @@ entity_reference_revisions.default.handler_settings:
       type: sequence
       label: 'types'
       sequence:
-        - type: string
+        type: string
         label: 'Type'
     sort:
       type: mapping
@@ -31,7 +31,7 @@ entity_reference_revisions.default.handler_settings:
           type: sequence
           label: 'Restrict to the selected roles'
           sequence:
-            - type: string
+            type: string
             label: 'Role'
     auto_create:
       type: boolean

config/schema/entity_reference_revisions.views.schema.yml

@@ -16,5 +16,5 @@ views.style.entity_reference_revisions:
       type: sequence
       label: 'Search fields'
       sequence:
-        - type: string
+        type: string
         label: 'Search field'