message: Revise comment in XML schema
diff: <define name="F32_define">
  <a:documentation>32 bit float</a:documentation>
  <!--
  - Use text instead of float here
  - Float does not accept the full range of C++ floating literal syntax
  + Use text instead of "float" here
  + "Float" does not accept the C++ syntax for F32 literal values, e.g., 1.0f
  <data type="float">
  </data>
  -->
  