* add training image for docs
* docs(doc/code-docs): add training img for en doc
* docs(doc/code-docs): fix en docs for initialize
* docs(doc/code-docs): update conf file for readthedocs
* docs(doc/code-docs): fix typos
* docs(doc/code-docs): fix typos for reathedocs
* docs(doc/code-docs): minor typo fix for reathedocs
* docs(doc/code-docs): fix readthedocs conf file
* docs(doc/code-docs): update training image
* docs(doc/code-docs): fix typos
* docs(doc/code-docs): update training image
* docs(doc/code-docs): move training image to section initialize
* docs(doc/code-docs): fix lint
* add badge about reathedocs status