Prior to this commit, the PDF version of the Spring Reference Manual
contained HTML <strong></strong> tags in code examples due to the fact
that Asciidoctor converts bold formatting (i.e., elements wrapped in
`**` or `*`) within source code blocks into HTML tags even for PDF
rendering.
This commit addresses this issue by removing all bold formatting from
example code blocks.
Closes gh-22577
I edited for spelling, puncutation, grammar, usage, and corporate voice. I also added a bunch of cross-references and links to the Javadoc.
I also corrected the rendering problems that I had accidentally created in previous commits (because I was adjusting headings and adding callouts to listings.
1. Move schemas to local appendix within each top-level section.
2. Link to Javadoc for JSP tags
3. Purge Class Spring usage information
Issue: SPR-16045
Sam Brannen
Juergen Hoeller
Brian Clozel
Jay Bryant
Rossen Stoyanchev