bpo-33422: Fix quotation marks getting deleted when looking up byte/string literals on pydoc. (GH-6701)


Also update the list of string prefixes.
(cherry picked from commit b2043bbe6034b53f5ad337887f4741b74b70b00d)

Co-authored-by: Andrés Delfino <adelfino@gmail.com>
2 files changed