Fix echo not interpret \n in GoTest.sh (#5426)
Fix echo not interpret \n in GoTest.sh (#5426)

When running GoTest.sh, the last step that checking go format files
are print \n instead of new line:

These files are not well gofmt'ed:\n\nMyGame/Example/Color.go
MyGame/Example/MonsterStorage_grpc.go

This changes fix it by echo NOT_FMT_FILES in separate line.
pjulien/flatbuffers,royalharsh/flatbuffers,royalharsh/flatbuffers,evolutional/flatbuffers,royalharsh/flatbuffers,pjulien/flatbuffers,royalharsh/flatbuffers,evolutional/flatbuffers,stewartmiles/flatbuffers,pjulien/flatbuffers,alexames/flatbuffers,evolutional/flatbuffers,stewartmiles/flatbuffers,pjulien/flatbuffers,google/flatbuffers,DavadDi/flatbuffers,pjulien/flatbuffers,evolutional/flatbuffers,royalharsh/flatbuffers,royalharsh/flatbuffers,pjulien/flatbuffers,evolutional/flatbuffers,DavadDi/flatbuffers,alexames/flatbuffers,google/flatbuffers,google/flatbuffers,google/flatbuffers,stewartmiles/flatbuffers,alexames/flatbuffers,google/flatbuffers,pjulien/flatbuffers,google/flatbuffers,evolutional/flatbuffers,stewartmiles/flatbuffers,alexames/flatbuffers,google/flatbuffers,evolutional/flatbuffers,google/flatbuffers,google/flatbuffers,evolutional/flatbuffers,DavadDi/flatbuffers,alexames/flatbuffers,royalharsh/flatbuffers,alexames/flatbuffers,evolutional/flatbuffers,alexames/flatbuffers,DavadDi/flatbuffers,stewartmiles/flatbuffers,pjulien/flatbuffers,stewartmiles/flatbuffers,pjulien/flatbuffers,google/flatbuffers,stewartmiles/flatbuffers,royalharsh/flatbuffers,evolutional/flatbuffers,pjulien/flatbuffers,pjulien/flatbuffers,royalharsh/flatbuffers,alexames/flatbuffers,royalharsh/flatbuffers,pjulien/flatbuffers,stewartmiles/flatbuffers,stewartmiles/flatbuffers,alexames/flatbuffers,google/flatbuffers,google/flatbuffers,stewartmiles/flatbuffers,stewartmiles/flatbuffers,alexames/flatbuffers,evolutional/flatbuffers,DavadDi/flatbuffers,alexames/flatbuffers,evolutional/flatbuffers,evolutional/flatbuffers,alexames/flatbuffers,google/flatbuffers,stewartmiles/flatbuffers,alexames/flatbuffers,alexames/flatbuffers,google/flatbuffers,alexames/flatbuffers,DavadDi/flatbuffers,stewartmiles/flatbuffers,google/flatbuffers