a word is missing in https://github.com/fenixsoft/awesome-fenix/blob/master/exploration/projects/servicemesh_arch_istio.md

[bigxing]

服务网格：Istio 这一章
https://github.com/fenixsoft/awesome-fenix/blob/master/exploration/projects/servicemesh_arch_istio.md
[需求场景]一小节
“每运维人员能支持服务的数量”， 这里“每运维人员”掉了字：个