[docs] verify_certs is True by default but documented as False

[ypid-geberit]

There is a mismatch between docs and implementation:

elasticsearch-py/elasticsearch/client/__init__.py

Line 120 in 7751fed

# make sure we verify SSL certificates (off by default)

elasticsearch-py/elasticsearch/connection/http_requests.py

Line 30 in 7751fed

use_ssl=False, verify_certs=True, ca_certs=None, client_cert=None,

At first I was scared about the bad default value of verify_certs=False but happy it is only the docs that are wrong 😉

[fxdgear]

Ahh ok there's actually a disconnect between requests and urllib3. Because off by default is what we get in urllib3. I'll clean up the docs.