chore: apply suggestions from code review

Co-authored-by: Zaiming (Stone) Shi <zmstone@gmail.com>

apps/emqx_auth_mnesia/src/emqx_authn_mnesia.erl

@@ -528,9 +528,9 @@ find_password_hash(hash, User = #{<<"password_hash">> := PasswordHash}, _) ->
 find_password_hash(plain, #{<<"password">> := Password}, Algorithm) ->
     emqx_authn_password_hashing:hash(Algorithm, Password);
 find_password_hash(hash, _User, _) ->
-    error("hash_import_required_password_hash_field");
+    error("hash_import_requires_password_hash_field");
 find_password_hash(plain, _User, _Algorithm) ->
-    error("plain_import_required_password_field");
+    error("plain_import_requires_password_field");
 find_password_hash(_, _, _) ->
     error(bad_format).
 

apps/emqx_auth_mnesia/test/emqx_authn_mnesia_SUITE.erl

@@ -230,7 +230,7 @@ t_import_users(_) ->
     ),
     %% import plain.json with hash method
     ?assertEqual(
-        {error, "hash_import_required_password_hash_field"},
+        {error, "hash_import_requires_password_hash_field"},
         emqx_authn_mnesia:import_users(
             sample_filename_and_data(hash, <<"user-credentials-plain.json">>),
             State
@@ -299,7 +299,7 @@ t_import_users_plain(_) ->
     ),
     %% import hash.json with plain method
     ?assertEqual(
-        {error, "plain_import_required_password_field"},
+        {error, "plain_import_requires_password_field"},
         emqx_authn_mnesia:import_users(
             sample_filename_and_data(plain, <<"user-credentials.json">>),
             State