docs: update installation instructions for Zsh users

docs/docs/installation.md

@@ -2,6 +2,7 @@
 hide:
   - toc
 ---
+
 Go-Blueprint provides a convenient CLI tool to effortlessly set up your Go projects. Follow the steps below to install the tool on your system.
 
 ## Binary Installation
@@ -14,6 +15,26 @@ go install github.com/melkeydev/go-blueprint@latest
 
 This command installs the Go-Blueprint binary, automatically binding it to your `$GOPATH`.
 
+> if you’re using Zsh, you’ll need to add it manually to `~/.zshrc`.
+
+> After running the installation command, you need to update your `PATH` environment variable. To do this, you need to find out the correct `GOPATH` for your system. You can do this by running the following command:
+> Check your `GOPATH`
+>
+> ```
+> go env GOPATH
+> ```
+>
+> Then, add the following line to your `~/.zshrc` file:
+>
+> ```
+> GOPATH=$HOME/go  PATH=$PATH:/usr/local/go/bin:$GOPATH/bin
+> ```
+>
+> Save the changes to your `~/.zshrc` file by running the following command:
+>
+> ```
+> source ~/.zshrc
+> ```
 
 ## Building and Installing from Source
 
@@ -24,12 +45,13 @@ Clone the Go-Blueprint repository from GitHub:
 ```sh
 git clone https://github.com/melkeydev/go-blueprint
 ```
-   
+
 Build the Go-Blueprint binary:
 
 ```sh
 go build
 ```
+
 Install in your `$PATH` to make it accessible system-wide:
 
 ```sh