A few more readme changes for clarity and accuracy
A few more readme changes for clarity and accuracy

steelheaddigital/elastalert-ui,learningcom/elastalert-ui,learningcom/elastalert-ui,steelheaddigital/elastalert-ui,learningcom/elastalert-ui,steelheaddigital/elastalert-ui,learningcom/elastalert-ui,steelheaddigital/elastalert-ui