docs: conf: Use abap pygments style
The "trac" pygments style is not as readable and doesn't fit
as well with the overall blue-ish white theme.
@@ -98,7 +98,8 @@ exclude_patterns = ['_build']
#show_authors = False
# The name of the Pygments (syntax highlighting) style to use.
-pygments_style = 'trac'
+# See https://pygments.org/styles/
+pygments_style = 'abap'
# A list of ignored prefixes for module index sorting.
#modindex_common_prefix = []
