describe input of http_proxy and HTTPS_PROXY env vars
@@ -81,10 +81,10 @@ environment variable is to rename the binary to either http or https.
.BR REQUESTS_CA_BUNDLE ", " CURL_CA_BUNDLE
Sets a custom CA bundle path.
.TP
-.B http_proxy
+.BR http_proxy "=[protocol://]<host>[:port]"
Sets the proxy server to use for HTTP.
.TP
-.B HTTPS_PROXY
+.BR HTTPS_PROXY "=[protocol://]<host>[:port]"
Sets the proxy server to use for HTTPS.
.TP
.B NO_PROXY
