Typo fixed in README
Typo fixed in README

Signed-off-by: Martin Sustrik <4dd6061be1198639e8b05ce4fd5ead7a0dcaa0f4@250bpm.com>

dailypips/libmill,lsm/libmill,reqshark/libmill,sustrik/libmill,linearregression/libmill,linearregression/libmill,ebfe/libmill,nirs/libmill,sustrik/libmill,reqshark/libmill,ebfe/libmill,ebfe/libmill,acornejo/libmill,linearregression/libmill,jimjag/mill,acornejo/libmill,sustrik/libmill,dailypips/libmill,lsm/libmill,nirs/libmill,jimjag/mill,jimjag/mill,reqshark/libmill,lsm/libmill,dailypips/libmill,8l/libmill,8l/libmill