Mention name casing rules for modules and functions (elixir-lang#1624)

StrajnarFilip · josevalim · web-flow · commit 8166828f2dd6 · 2022-08-12T10:36:13.000+02:00
* Mention name casing rules for modules and functions

It might be convenient to immediately notify the readers of this guide that modules and functions must be capitalized correctly.

* Update getting-started/modules-and-functions.markdown

Co-authored-by: José Valim &lt;jose.valim@gmail.com&gt;
diff --git a/getting-started/modules-and-functions.markdown b/getting-started/modules-and-functions.markdown
@@ -12,7 +12,7 @@ iex> String.length("hello")
 5
 ```
 
-In order to create our own modules in Elixir, we use the `defmodule` macro. We use the `def` macro to define functions in that module:
+In order to create our own modules in Elixir, we use the `defmodule` macro. The first letter of the module must be in uppercase. We use the `def` macro to define functions in that module. The first letter of every function must be in lowercase (or underscore):
 
 ```elixir
 iex> defmodule Math do

Original file line number	Diff line number	Diff line change
`@@ -12,7 +12,7 @@ iex> String.length("hello")`
`12`	`12`	`5`
`13`	`13`	```
`14`	`14`
`15`		-In order to create our own modules in Elixir, we use the `defmodule` macro. We use the `def` macro to define functions in that module:
	`15`	+In order to create our own modules in Elixir, we use the `defmodule` macro. The first letter of the module must be in uppercase. We use the `def` macro to define functions in that module. The first letter of every function must be in lowercase (or underscore):
`16`	`16`
`17`	`17`	```elixir
`18`	`18`	`iex> defmodule Math do`