Replaced tabs with spaces
Replaced tabs with spaces

All tabs in endianness.wast are replaced with two spaces for consistency
with the other tests.

AndrewScheidecker/WebAssembly-spec,kg/spec,pjuftring/spec,pjuftring/spec,kg/spec,AndrewScheidecker/WebAssembly-spec,naturaltransformation/spec,naturaltransformation/spec