Wrong hash format used in examples for proxy option

[arminru]

Description:

The HTTP mixin docs use commas as delimiters between entries for the hash used in the proxy config option examples. As per the Logstash config file format documented in https://www.elastic.co/guide/en/logstash/current/configuration-file-structure.html#hash, these would need to be space delimited instead.
Also the plain string the first example would need to be put into quotation marks (proxy => 'http://proxy.org:1234'), I believe.

URL:

logstash-mixin-http_client/README.md

Lines 58 to 60 in 9478c99

	# 1. Proxy host in form: http://proxy.org:1234
	# 2. Proxy host in form: {host => "proxy.org", port => 80, scheme => 'http', user => 'username@host', password => 'password'}
	# 3. Proxy host in form: {url => 'http://proxy.org:1234', user => 'username@host', password => 'password'}

Proposed change:

Current:

# 1. Proxy host in form: http://proxy.org:1234
# 2. Proxy host in form: {host => "proxy.org", port => 80, scheme => 'http', user => 'username@host', password => 'password'}
# 3. Proxy host in form: {url =>  'http://proxy.org:1234', user => 'username@host', password => 'password'

Expected:

# 1. Proxy host in form: 'http://proxy.org:1234'
# 2. Proxy host in form: {host => "proxy.org" port => 80 scheme => 'http' user => 'username@host' password => 'password'}
# 3. Proxy host in form: {url =>  'http://proxy.org:1234' user => 'username@host' password => 'password'}

Anything else?

See also: logstash-plugins/logstash-output-http#148