* docs(id): add book, cast, and course

* docs(fix): readjust space

* docs: add solidity index

* docs: fix missing line

* Update courses/free-courses-id.md
Co-authored-by: NImVector <59611597+LuigiImVector@users.noreply.github.com>

* Update books/free-programming-books-id.md
Co-authored-by: NImVector <59611597+LuigiImVector@users.noreply.github.com>

* Update courses/free-courses-id.md
Co-authored-by: NImVector <59611597+LuigiImVector@users.noreply.github.com>

* Update books/free-programming-books-id.md
Co-authored-by: NImVector <59611597+LuigiImVector@users.noreply.github.com>

* Update casts/free-podcasts-screencasts-id.md
Co-authored-by: NDavid Ordás <3125580+davorpa@users.noreply.github.com>

* Update books/free-programming-books-id.md
Co-authored-by: NDavid Ordás <3125580+davorpa@users.noreply.github.com>
Co-authored-by: NImVector <59611597+LuigiImVector@users.noreply.github.com>
Co-authored-by: NDavid Ordás <3125580+davorpa@users.noreply.github.com>

* Add podcast id resource

* remove trailing slash and order base on
alpabhetical

* remove trailing slash

* fix to meet the requirement

* fix to meet the requirement

* add only 1 podcasts

* Add Indonesia podcast link on readme