Merge pull request #301 from okp4/fix/cli-go-path

Added instruction to fix "bash: okp4d not found" issue

docs/tutorials/cli-1.mdx

@@ -50,15 +50,20 @@ Certain aspects, such as your computer's unique characteristics (particularly fo
 git clone https://github.com/okp4/okp4d.git && cd okp4d
 ```
 
-2. Build and install:
+2. Make sure `$GOPATH/bin` is set on the $PATH environment variable. You can add it like this:
+
+```bash
+export PATH=${PATH}:`go env GOPATH`/bin
+```
+
+3. Build and install:
 
 <CodeBlock language="bash">
   {`git checkout ${data.okp4dVersion}
-make build
 make install`}
 </CodeBlock>
 
-3. Verify the installation:
+4. Verify the installation:
 
 ```bash
 okp4d version