Add word boundaries to Units.yml

This ensures that our units (such as 'cm') aren't part of another word.

Fixes #19.

Author: jdkato

Microsoft/Units.yml

@@ -1,10 +1,9 @@
 extends: existence
 message: "Don't spell out the number in '%s'."
 link: https://docs.microsoft.com/en-us/style-guide/a-z-word-list-term-collections/term-collections/units-of-measure-terms
-nonword: true
 level: error
 raw:
-  - '\b[a-zA-Z]+\s'
+  - '[a-zA-Z]+\s'
 tokens:
   - '(?:centi|milli)?meters'
   - '(?:kilo)?grams'

features/rules.feature

@@ -86,6 +86,7 @@ Feature: Rules
       """
       test.md:5:17:Microsoft.Units:Don't spell out the number in 'five pounds'.
       test.md:7:8:Microsoft.Units:Don't spell out the number in 'six meters'.
+      test.md:11:8:Microsoft.Units:Don't spell out the number in 'ten cm'.
       """
 
   Scenario: URL grammar

fixtures/Units/test.md

@@ -5,3 +5,7 @@ Cook on high for three minutes.
 The box weighed five pounds.
 
 It was six meters long.
+
+Using a task is similar to using a cmdlet or a function call.
+
+A wire ten cm long is cut into 2 pieces, one of length x and the other of length 10-x. Each piece is bent into the shape of a square.