specs_generation.md: update kramdown command line

coderay was extracted from the core and the options removed in 2.0.0.
See:
49e1b12f52

Change-Id: I5191dcec296ba4bcde5f0bcbc46d1e1135d40ec2
This commit is contained in:
James Zern 2024-09-06 15:32:26 -07:00
parent 57883c78ed
commit 40e4ca60ea

View File

@ -17,10 +17,11 @@ rubygems will install automatically. The following will apply inline CSS
styling; an external stylesheet is not needed.
```shell
$ kramdown doc/webp-lossless-bitstream-spec.txt --template \
doc/template.html --coderay-css style --coderay-line-numbers ' ' \
--coderay-default-lang c > \
doc/output/webp-lossless-bitstream-spec.html
$ kramdown doc/webp-lossless-bitstream-spec.txt \
--template doc/template.html \
-x syntax-coderay --syntax-highlighter coderay \
--syntax-highlighter-opts "{default_lang: c, line_numbers: , css: style}" \
> doc/output/webp-lossless-bitstream-spec.html
```
Optimally, use kramdown 0.13.7 or newer if syntax highlighting desired.