misspelling in RelativeClearanceCondition

Describe the bug

Misspelling of freespace in RelativeClearanceCondition.

Describe how to reproduce the bug

<xsd:complexType name="RelativeClearanceCondition">
  <xsd:sequence>
    <xsd:element name="RelativeLaneRange" type="RelativeLaneRange" minOccurs="0" maxOccurs="unbounded"/>
    <xsd:element name="EntityRef" type="EntityRef" minOccurs="0" maxOccurs="unbounded"/>
  </xsd:sequence>
  <xsd:attribute name="oppositeLanes" type="Boolean" use="required"/>
  <xsd:attribute name="distanceForward" type="Double"/>
  <xsd:attribute name="distanceBackward" type="Double"/>
  <xsd:attribute name="freeSpace" type="Boolean" use="required"/>
</xsd:complexType>

Describe the expected behavior

In all other places it is spelled as freespace (lower case s)