No target for documentation link

[p-alik]

Documentation link on README.md hasn't any target.

$ curl -i --location http://packages.python.org/python3-gearman/
HTTP/1.1 301 Moved Permanently
Content-length: 0
Location: https://packages.python.org/python3-gearman/

HTTP/1.1 301 Moved Permanently
Server: nginx
Date: Mon, 31 Aug 2020 07:24:53 GMT
Content-Type: text/html
Content-Length: 178
Location: https://pythonhosted.org/python3-gearman/
Strict-Transport-Security: max-age=315360000; includeSubDomains; preload

HTTP/2 404 
content-type: application/octet-stream
server: nginx/1.13.9
accept-ranges: bytes
date: Mon, 31 Aug 2020 07:24:53 GMT
age: 5
x-served-by: cache-bwi5139-BWI, cache-hhn4060-HHN
x-cache: MISS, HIT
x-cache-hits: 0, 1
x-timer: S1598858694.677480,VS0,VE0
strict-transport-security: max-age=31536000; includeSubDomains; preload
x-frame-options: deny
x-xss-protection: 1; mode=block
x-content-type-options: nosniff
x-permitted-cross-domain-policies: none
content-length: 0