doc: update version used in example.

Author: ldez

readme.md

@@ -27,7 +27,7 @@ If you appreciate this project:
 ### Download / CI Integration
 
 ```bash
-curl -sfL https://raw.githubusercontent.com/ldez/traefik-certs-dumper/master/godownloader.sh | bash -s -- -b $GOPATH/bin v1.5.0
+curl -sfL https://raw.githubusercontent.com/ldez/traefik-certs-dumper/master/godownloader.sh | bash -s -- -b $GOPATH/bin v2.7.0
 ```
 
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