Sometimes, depending on the length of lines, anchor elements would be formatted
incorrectly by `html.prettyPrint` and the space right after the element was
removed.
This was apparently caused by a bug in `html.prettyPrint` in combination with
its default behavior of wrapping lines at a specific limit (70 chars). Since the
output is only meant to be used as JSON string data, wrapping the lines makes it
less readable by adding unnecessary `\n`.
This commit disables the line wrapping, which effectively avoids the bug that
was responsible for incorrectly formatting anchor elements and surrounding
space.
Related to #15681.