Merge pull request #2090 from antimatter96/patch-1

Fix docs for shell completions

Author: abitrolly

docs/v3/examples/completions/shell-completions.md

@@ -23,7 +23,7 @@ Enabling auto complete requires 2 things
 
 Consider the following program
 
- ```go
+```go
 package main
 
 import (
@@ -300,4 +300,4 @@ or `notepad $profile`) and add the line:
 
 ```powershell
 & path/to/autocomplete/<my program>.ps1
-```
+```