rule no-multi-spaces report on multi spaces inside template string literal

[noe132]

code:

// code
let message
message += type === 'ERROR' ? `${chalk.bgRed('ERROR')}  ` : ''
                                                        ^
                              Multiple spaces found before '`'. (no-multi-spaces)

**rule: **

// ...
'no-multi-spaces': true,

what was expected to be:
no error report.

versions:
tslint 5.9.1
tsc 2.7.2