[clang-doc] Fix output format of html

The children of a TagNode are rendered in the same line as the parent only if they are all TextNodes.
When children are not inline; two text nodes that are adjacent won't have a new line between them, each tag node is rendered in its own line.

Differential Revision: https://reviews.llvm.org/D65005

git-svn-id: https://llvm.org/svn/llvm-project/clang-tools-extra/trunk@367050 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed