Fix lint warning with anomalous backslash
Fix lint warning with anomalous backslash

awong1900/platformio,platformio/platformio-core,TimJay/platformio,dkuku/platformio,aphelps/platformio,mcanthony/platformio,bkudria/platformio,eiginn/platformio,atyenoria/platformio,bkudria/platformio,platformio/platformio-core,valeros/platformio,aphelps/platformio,awong1900/platformio,TimJay/platformio,TimJay/platformio,mseroczynski/platformio,bkudria/platformio,mplewis/platformio,ZachMassia/platformio,aphelps/platformio,platformio/platformio,TimJay/platformio,aphelps/platformio,TimJay/platformio,jrobeson/platformio,jrobeson/platformio,jrobeson/platformio,bkudria/platformio,awong1900/platformio,jrobeson/platformio