message: Align formatting for standard_surface
diff: <!--
  Autodesk Standard Surface node definition.
  -->
  - <nodedef name="ND_standard_surface_surfaceshader" node="standard_surface" nodegroup="pbr" doc="Autodesk standard surface shader" version="1.0.1" isdefaultversion="true"
  - inherit="ND_standard_surface_surfaceshader_100">
  - <input name="base" type="float" value="1.0" uimin="0.0" uimax="1.0" uiname="Base" uifolder="Base" doc="Multiplier on the intensity of the diffuse reflection." />
  - <input name="base_color" type="color3" value="0.8, 0.8, 0.8" uimin="0,0,0" uimax="1,1,1" uiname="Base Color" uifolder="Base" doc="Color of the diffuse reflection." />
  + <nodedef name="ND_standard_surface_surfaceshader" node="standard_surface" nodegroup="pbr" version="1.0.1" isdefaultversion="true" inherit="ND_standard_surface_surfaceshader_100"
  + doc="Autodesk standard surface shader">
  + <input name="base" type="float" value="1.0" uimin="0.0" uimax="1.0" uiname="Base" uifolder="Base"
  + doc="Multiplier on the intensity of the diffuse reflection." />
  + <input name="base_color" type="color3" value="0.8, 0.8, 0.8" uimin="0,0,0" uimax="1,1,1" uiname="Base Color" uifolder="Base"
  + doc="Color of the diffuse reflection." />
  </nodedef>
  - <nodedef name="ND_standard_surface_surfaceshader_100" node="standard_surface" nodegroup="pbr" doc="Autodesk standard surface shader" version="1.0.0" >
  + <nodedef name="ND_standard_surface_surfaceshader_100" node="standard_surface" nodegroup="pbr" version="1.0.0" doc="Autodesk standard surface shader">
  <input name="base" type="float" value="0.8" uimin="0.0" uimax="1.0" uiname="Base" uifolder="Base"
  doc="Multiplier on the intensity of the diffuse reflection." />
  <input name="base_color" type="color3" value="1.0, 1.0, 1.0" uimin="0,0,0" uimax="1,1,1" uiname="Base Color" uifolder="Base"
  </nodedef>
  <!--
  - Association between imlementation and definition.
  - Note that version 1.0.1 only changes some default values and thus reuses the same 1.0.0 nodegraph implementation
  + Association between implementation and definition.
  + Note that version 1.0.1 only changes default values and thus reuses the same 1.0.0 nodegraph implementation.
  -->
  - <implementation name="IMPL_standard_surface_surfaceshader_101"
  - nodedef="ND_standard_surface_surfaceshader"
  - nodegraph="NG_standard_surface_surfaceshader_100" />
  -
  - <implementation name="IMPL_standard_surface_surfaceshader_100"
  - nodedef="ND_standard_surface_surfaceshader_100"
  - nodegraph="NG_standard_surface_surfaceshader_100" />
  + <implementation name="IMPL_standard_surface_surfaceshader_101" nodedef="ND_standard_surface_surfaceshader" nodegraph="NG_standard_surface_surfaceshader_100" />
  + <implementation name="IMPL_standard_surface_surfaceshader_100" nodedef="ND_standard_surface_surfaceshader_100" nodegraph="NG_standard_surface_surfaceshader_100" />
  <!--
  Autodesk Standard Surface nodegraph implementation.
  