doc: Fixing single ip range documentation
doc: Fixing single ip range documentation

Writing 10:20 isn't supported by edeploy, it shall be written
10-10:20-20 instead.

enovance/edeploy,lebauce/edeploy,lebauce/edeploy,redhat-cip/edeploy,enovance/edeploy,redhat-cip/edeploy,lebauce/edeploy,redhat-cip/edeploy,redhat-cip/edeploy,enovance/edeploy,enovance/edeploy,lebauce/edeploy