[doc] unclear guidance on the https server setup

[cdluminate]

In the documentation (https://docs.gitea.io/en-us/https-setup/), it is said that the configuration should look like this to get https working:

[server]
PROTOCOL  = https
ROOT_URL  = https://git.example.com:3000/
HTTP_PORT = 3000
CERT_FILE = cert.pem
KEY_FILE  = key.pem

Then it took me quite a while to get it working until I realized that the values for the CERT_FILE and KEY_FILE should be absolute paths instead of the literal relative path.

[6543]

whould this had helped you ?

-CERT_FILE = cert.pem
-KEY_FILE  = key.pem
+CERT_FILE = /path/cert.pem
+KEY_FILE  = /path/key.pem

without absolute it's relative to $CUSTOM_ROOT ...

[cdluminate]

@6543 Yes. I think that /path/ hint is enough to help people understand it correctly. And probably CUSTOM_ROOT should be documented somewhere as well.

[6543]

I have to correct myselve ... it's called GITEA_CUSTOM ... @cdluminate would you mind to create/propose a pull for the docs?

(It's generated by hugo, you find the files at /docs/)