CLDC-2190 Fix typo (#1549)

# Context

- https://digital.dclg.gov.uk/jira/browse/CLDC-2190

# Changes

- Fix grammar/typo in error message

config/locales/en.yml

@@ -190,11 +190,11 @@ en:
           reactivating_soon: "The scheme %{name} is not available until %{date}. Select another scheme or edit the tenancy start date"
           activating_soon: "%{name} is not available until %{date}. Enter a tenancy start date after %{date}"
       owning_organisation:
-        invalid: "Please select owning organisation or managing organisation that you belong to"
+        invalid: "Please select the owning organisation or managing organisation that you belong to"
       managing_organisation:
-        invalid: "Please select owning organisation or managing organisation that you belong to"
+        invalid: "Please select the owning organisation or managing organisation that you belong to"
       created_by:
-        invalid: "Please select owning organisation or managing organisation that you belong to"
+        invalid: "Please select the owning organisation or managing organisation that you belong to"
       lettype:
         general_needs_mismatch: Lettings type must be a general needs type because you selected general needs when uploading the file
         supported_housing_mismatch: Lettings type must be a supported housing type because you selected supported housing when uploading the file