Documentation updates

[jotdl]

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[replay]

i think this is a confusing example because the regular expression is "regex", which doesn't make much sense, a regular expression doesn't always have the string "regex" in it.

how about another example that's more obvious to understand:

Suggested change

	regex-labeler:
	matchers:
	- regex: "regex"
	numeric-labeler:
	matchers:
	- numeric: "[0-9]+"

[replay]

Suggested change

	In this example the action would apply to all new issues (as no `required_labels` are set). If the issue title and/or body contains the word "regex" it would be labeled as `regex-labeler` by default. But if the word `assignment` is matched, the label `ic-assignment` would be assigned instead (given the higher weight).
	In this example the action would apply to all new issues (as no `required_labels` are set). If the issue title and/or body contains numbers it would be labeled as `numeric` by default. But if the word `assignment` is matched, the label `ic-assignment` would be assigned instead (given the higher weight).

[replay]

thanks, this is great, really useful!