Pygments 2.7.x is stricter in how it validates JSON escapes, aligning it
closer with the spec [1]. Turns out we have some invalid JSON in our
docs, meaning builds are now failing with the following error:
doc/source/user/metadata.rst:262: WARNING: Could not lex literal_block
as "json". Highlighting skipped.
Resolve this.
[1] 9514e794e0
Change-Id: Ic50e29e9c7817744ad0b4f9de309aa3e96a09505
Signed-off-by: Stephen Finucane <stephenfin@redhat.com>
b32a685595