Update load_module_metadata.rb to correct capitalisation in strings documentartion

[davidsandilands]

Just a simple capitalisation error on usage

[puppet-community-rangefinder]

load_module_metadata is a function

Breaking changes to this file MAY impact these 9 modules (near match):

• puppet-yum
• datadog-datadog_agent
• icinga-icinga2
• danzilio-virtualbox
• simp-polkit
• simp-tcpwrappers
• theforeman-pulpcore
• geekify-cloudwatchlogs
• puppetlabs-relay

This module is declared in 318 of 579 indexed public Puppetfiles.

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These results were generated with Rangefinder, a tool that helps predict the downstream impact of breaking changes to elements used in Puppet modules. You can run this on the command line to get a full report.

Exact matches are those that we can positively identify via namespace and the declaring modules' metadata. Non-namespaced items, such as Puppet 3.x functions, will always be reported as near matches only.

[chelnak]

Good spot!