Fix recent syntax error in platform.txt#7761

Closed

dok-net wants to merge 1 commit intoesp8266:masterfrom

dok-net:fix_platform_txt

Commits on Dec 13, 2020

fixup! Fixes https://github.com/esp8266/Arduino/issues/7749#issue-760585820 (#7750)
dok-net
committed