Update docs to Go version 1.22 (#274)

Author: zac-scheiwe

docs/osmosis-core/build.md

@@ -6,17 +6,17 @@ sidebar_position: 2
 # Build and Test Osmosis Source Code
 
 
-## Install Go 1.18
+## Install Go 1.22
 
-Currently, Osmosis uses Go 1.18 to compile the code.
+Currently, Osmosis uses Go 1.22 to compile the code.
 
-Install [Go 1.18](https://go.dev/doc/install) by following instructions there.
+Install [Go 1.22](https://go.dev/doc/install) by following instructions there.
 
 Verify the installation by typing `go version` in your terminal.
 
 ```sh
 $ go version
-go version go1.18.1 darwin/amd64
+go version go1.22.4 darwin/amd64
 ```
 
 ## Build Osmosis