update contents and change headings in ebooks
Follow up PR for
updated the table of contents
change subcategory titles in markdown from h2 to h3
@@ -118,6 +118,8 @@ Please take a quick gander at the [contribution guidelines](https://github.com/a
- [Benchmarks](#benchmarks)
- [Conferences](#conferences)
- [E-Books](#e-books)
+ - [E-books for purchase](#e-books-for-purchase)
+ - [Free e-books](#free-e-books)
- [Gophers](#gophers)
- [Meetups](#meetups)
- [Style Guides](#style-guides)
@@ -2920,7 +2922,7 @@ _**Unofficial** set of patterns for structuring projects._
## E-Books
-## E-books for purchase
+### E-books for purchase
* [100 Go Mistakes: How to Avoid Them](https://www.manning.com/books/100-go-mistakes-how-to-avoid-them)
* [Build an Orchestrator in Go](https://www.manning.com/books/build-an-orchestrator-in-go)
@@ -2929,7 +2931,7 @@ _**Unofficial** set of patterns for structuring projects._
* [Writing A Compiler In Go](https://compilerbook.com)
* [Writing An Interpreter In Go](https://interpreterbook.com) - Book that introduces dozens of techniques for writing idiomatic, expressive, and efficient Go code that avoids common pitfalls.
-## Free e-books
+### Free e-books
* [A Go Developer's Notebook](https://leanpub.com/GoNotebook/read)
* [An Introduction to Programming in Go](http://www.golang-book.com/)
