Rename makeInfoboxNode to makeDtNode for consistency.
Rename makeInfoboxNode to makeDtNode for consistency.

googlecodelabs/tools,Qwiklabs/codelab-tools,googlecodelabs/tools,googlecodelabs/tools,googlecodelabs/tools,Qwiklabs/codelab-tools,Qwiklabs/codelab-tools,Qwiklabs/codelab-tools