debug/README.md update
debug/README.md update

- Change a local link-parser alias "lg" to link-parser.
- Break some long commands with backslash/newline.
- Add info on -v=102 (print connectors).
- Update info on debug configuration.
- Fix markdown of intra-word underline (with it and without it there
  is a problem in some markdown readers...).
- Fix info rot in the example of sane_linkage_morphism().

opencog/link-grammar,opencog/link-grammar,linas/link-grammar,opencog/link-grammar,linas/link-grammar,linas/link-grammar,linas/link-grammar,ampli/link-grammar,ampli/link-grammar,ampli/link-grammar,linas/link-grammar,opencog/link-grammar,opencog/link-grammar,opencog/link-grammar,ampli/link-grammar,opencog/link-grammar,linas/link-grammar,linas/link-grammar,ampli/link-grammar,linas/link-grammar,ampli/link-grammar,linas/link-grammar,opencog/link-grammar,ampli/link-grammar,ampli/link-grammar,ampli/link-grammar,opencog/link-grammar