Fix comment about QName regex
The comment on QName explained that QNames match the Name regex, but
the regex written was slightly different to the actual Name regex
(missed that '.' is a valid char in each group).
@@ -44,7 +44,7 @@ func AsName(s string) Name {
}
// QName is a qualified identifier. The "/" character optionally delimits different pieces of the name. Each element
-// conforms to the Name regex [A-Za-z_][A-Za-z0-9_]*. For example, "pulumi/pulumi/stack".
+// conforms to the Name regex [A-Za-z_.][A-Za-z0-9_.]*. For example, "pulumi/pulumi/stack".
type QName string
func (nm QName) String() string { return string(nm) }
