Fix typo: "county" -> "country"

Author: jkshapiro

guidelines/input-purposes.html

@@ -52,7 +52,7 @@ <h2>Input Purposes for User Interface Components</h2>
 		<li><strong>photo</strong> - Photograph, icon, or other image corresponding to the company, person, address, or contact information in the other fields associated with this field</li>
 		<li><strong>tel</strong> - Full telephone number, including country code</li>
 		<li><strong>tel-country-code</strong> - Country code component of the telephone number</li>
-		<li><strong>tel-national</strong> - Telephone number without the county code component, with a country-internal prefix applied if applicable</li>
+		<li><strong>tel-national</strong> - Telephone number without the country code component, with a country-internal prefix applied if applicable</li>
 		<li><strong>tel-area-code</strong> - Area code component of the telephone number, with a country-internal prefix applied if applicable</li>
 		<li><strong>tel-local</strong> - Telephone number without the country code and area code components</li>
 		<li><strong>tel-local-prefix</strong> - First part of the component of the telephone number that follows the area code, when that component is split into two components</li>