Improvements in the documentation (README.md) (#3907)
Improvements in the documentation (README.md) (#3907)

* Added suggestions by @yongtang

Signed-off-by: Chanakya-Ekbote <1cdc1484375107173e7dbd18931f055da4b6b91a@iitbbs.ac.in>

* Removed trailing whitespaces

Signed-off-by: Chanakya-Ekbote <1cdc1484375107173e7dbd18931f055da4b6b91a@iitbbs.ac.in>
johnbelamaric/coredns,chrisohaver/coredns,johnbelamaric/coredns,coredns/coredns,miekg/coredns,miekg/coredns,yongtang/coredns