Fix indentations of the inner elements on the same line/139

[yoheimuta]

ref. Protolint substituting "message" with " sage" · Issue #139 · yoheimuta/protolint

[yoheimuta]

I confirmed locally that #139 was fixed.
See the below command logs.

~/w/p/g/s/g/y/protolint ❯❯❯ echo '
> syntax = "proto3";
> 
> package foobar;
> 
> option java_package = "com.test.foo.bar";
> 
> message TestMessage { string test_field = 1; }
> ' > /tmp/issue_139/test.proto
~/w/p/g/s/g/y/protolint ❯❯❯ ./protolint /tmp/issue_139
[../../../../../../../../../tmp/issue_139/test.proto:8:23] Found a possible incorrect indentation style. Inserting a new line is recommended.
[../../../../../../../../../tmp/issue_139/test.proto:8:46] Found a possible incorrect indentation style. Inserting a new line is recommended.
~/w/p/g/s/g/y/protolint ❯❯❯ ./protolint -fix /tmp/issue_139
[../../../../../../../../../tmp/issue_139/test.proto:8:23] Found a possible incorrect indentation style. Inserting a new line is recommended.
[../../../../../../../../../tmp/issue_139/test.proto:8:46] Found a possible incorrect indentation style. Inserting a new line is recommended.
~/w/p/g/s/g/y/protolint ❯❯❯ cat /tmp/issue_139/test.proto

syntax = "proto3";

package foobar;

option java_package = "com.test.foo.bar";

message TestMessage {
  string test_field = 1;
}

~/w/p/g/s/g/y/protolint ❯❯❯ echo '
syntax = "proto3";

package foobar;

option java_package = "com.test.foo.bar";

message TestMessage { string test_field = 1; }
' > /tmp/issue_139/test.proto
~/w/p/g/s/g/y/protolint ❯❯❯ ./protolint -config_dir_path ./_example/config /tmp/issue_139
[../../../../../../../../../tmp/issue_139/test.proto:2:1] Syntax should be "proto2" but was "proto3".
[../../../../../../../../../tmp/issue_139/test.proto:8:23] Field "test_field" should have a comment of the form "// test_field ..."
[../../../../../../../../../tmp/issue_139/test.proto:8:1] Message "TestMessage" should have a comment of the form "// TestMessage ..."
~/w/p/g/s/g/y/protolint ❯❯❯ ./protolint -fix -config_dir_path ./_example/config /tmp/issue_139
[../../../../../../../../../tmp/issue_139/test.proto:2:1] Syntax should be "proto2" but was "proto3".
[../../../../../../../../../tmp/issue_139/test.proto:8:23] Field "test_field" should have a comment of the form "// test_field ..."
[../../../../../../../../../tmp/issue_139/test.proto:8:1] Message "TestMessage" should have a comment of the form "// TestMessage ..."
~/w/p/g/s/g/y/protolint ❯❯❯ cat /tmp/issue_139/test.proto

syntax = "proto3";

package foobar;

option java_package = "com.test.foo.bar";

message TestMessage { string test_field = 1; }