Add EN-RU Go books (#6469)

* Add EN-RU Go books

* Remove trailing slash

* Update books/free-programming-books-langs.md

Co-authored-by: David Ordás <3125580+davorpa@users.noreply.github.com>

* Update books/free-programming-books-ru.md

Co-authored-by: David Ordás <3125580+davorpa@users.noreply.github.com>

Co-authored-by: David Ordás <3125580+davorpa@users.noreply.github.com>

books/free-programming-books-langs.md

@@ -814,6 +814,7 @@ That section got so big, we decided to split it into its own file, the [BY SUBJE
 * [Go Bootcamp](http://www.golangbootcamp.com/book) - Matt Aimonetti
 * [Go by Example](https://gobyexample.com)
 * [Go for Javascript Developers](https://github.com/bulim/go-for-javascript-developers)
+* [Go for Python Programmers](https://golang-for-python-programmers.readthedocs.io/en/latest) - Jason McVetta (HTML, PDF, EPUB)
 * [Go Succinctly](https://www.syncfusion.com/succinctly-free-ebooks/go-succinctly) - Mark Lewin (PDF, EPUB, Kindle)
 * [Go Web Development Succinctly](https://www.syncfusion.com/succinctly-free-ebooks/go-web-development) - Mark Lewin (PDF, EPUB, Kindle)
 * [How To Code in Go](https://www.digitalocean.com/community/books/how-to-code-in-go-ebook) - Mark Bates, Cory Lanou, and Timothy J. Raymond (PDF, EPUB)
@@ -821,6 +822,7 @@ That section got so big, we decided to split it into its own file, the [BY SUBJE
 * [Learning Go](https://miek.nl/go/)
 * [Let's learn Go!](http://go-book.readthedocs.io/en/latest/)
 * [Practical Cryptography With Go](https://leanpub.com/gocrypto/read) - Kyle Isom
+* [Practical Go Lessons](https://www.practical-go-lessons.com) - Maximilien Andile
 * [The Go Tutorial](http://tour.golang.org)
 * [The Little Go Book](https://github.com/karlseguin/the-little-go-book) - Karl Seguin ([PDF](https://www.openmymind.net/assets/go/go.pdf), [ePUB](https://www.openmymind.net/assets/go/go.epub))
 * [Web apps in Go, the anti textbook](https://github.com/thewhitetulip/web-dev-golang-anti-textbook/)

books/free-programming-books-ru.md

@@ -201,6 +201,7 @@
 * [Руководство по языку Go](https://metanit.com/go/tutorial) - Евгений Попов
 * [Эффективный Go](https://github.com/Konstantin8105/Effective_Go_RU)
 * [Go в примерах](https://gobyexample.ru)
+* [Go для PHP-разработчиков](https://pahanini.gitbooks.io/golang-for-php-developers/content/) - Pavel Tetyaev (gitbook)
 * [The Little Go Book (перевод)](https://sefus.ru/little-go-book) - Karl Seguin, Roman Dolgolopov, Evgeny Popov, Alexander Dunin ([HTML](https://github.com/sefus/the-little-go-book/blob/master/ru/go.md), [EPUB](https://sefus.ru/dl/go.epub))