pact_consumer term! example doesn't match prose, and appears to contain accidental copy-pasta

[mjpieters]

This is the example given in the docstring for the term!() macro:

pact-reference/rust/pact_consumer/src/patterns/special_rules.rs

Lines 377 to 379 in e44458a

	/// // Match a string consisting of numbers and lower case letters, and
	/// // generate `"10a"`.$crate::patterns::
	/// "id_string": term!("^[0-9a-z]$", "10a")

There are two issues here:

• The regex given in the example will only match a single lowercase letter or number, because it lacks a quantifier for the [0-9a-z] group. It should have a + quantifier, matching at least one digit or lower-case letter:

  ^[0-9a-z]+$
  

  Without the + the example given won't match.

• The comment text ends in $crate::patterns::, which looks like a copy-paste error to me; it is the prefix used in most of the macro definitions and doesn't fit in the comment text.

The same two issues apply to the matching_regex!() macro defined below this.

Side note: Could terms be automatically tested against the given example value? It'd be a good internal consistency check.