Update ssh explanation & fix venv path (#298)

## What
<!--- Write the change being made with this pull request --->

## CHECKS ⚠️

Please make sure you are aware of the following.

- [ ] **The changes in this PR doesn't have private information

Author: wakuchan

document/01-git.en.md

@@ -34,11 +34,16 @@ In this step, we will learn how to use Git and GitHub.
    ```
 
 ## Use basic commands in Git
+0. Follow the GitHub documentation to setup SSH-key.
+- [Generate new SSH key](https://docs.github.com/en/authentication/connecting-to-github-with-ssh/generating-a-new-ssh-key-and-adding-it-to-the-ssh-agent?platform=mac)
+- [Add a new SSH key](https://docs.github.com/en/authentication/connecting-to-github-with-ssh/adding-a-new-ssh-key-to-your-github-account)
 
-1. **Clone** `https://github.com/<your github id>/mercari-build-training` onto your local using the following command.
+
+1. **Clone** `https://github.com/<your github id>/mercari-build-training` onto your local using the following command. Follow the below image to get the ssh url. 
+![clone-ssh.png](./assets/clone-ssh.png)
    ```shell
    $ cd <your working space>
-   $ git clone https://github.com/<your github id>/mercari-build-training
+   $ git clone git@github.com:<your github id>/mercari-build-training.git
    ```
 
 **:bangbang: Caution**

document/01-git.ja.md

@@ -34,12 +34,17 @@
    ```
 
 ## Gitの基本コマンドを使う
+0. SSH-keyのセットアップ
+GitHubの公式ドキュメントに従ってSSH-keyをセットアップします。
+- [新しいSSHキーを生成する](https://docs.github.com/ja/authentication/connecting-to-github-with-ssh/generating-a-new-ssh-key-and-adding-it-to-the-ssh-agent)
+- [新しいSSHキーを追加する](https://docs.github.com/ja/authentication/connecting-to-github-with-ssh/adding-a-new-ssh-key-to-your-github-account)
 
 1. `https://github.com/<your github id>/mercari-build-training` を **clone**
-   します。 cloneすると、github上のリポジトリを自分のローカルにDownloadできます。
+   します。 cloneすると、github上のリポジトリを自分のローカルにDownloadできます。以下の画像に従ってsshのurlを取得できます。
+   ![clone-ssh.png](./assets/clone-ssh.png)
    ```shell
    $ cd <your working space>
-   $ git clone https://github.com/<your github id>/mercari-build-training
+   $ git clone git@github.com:<your github id>/mercari-build-training.git
    ```
 
 **:bangbang: 注意**

document/02-local-env.en.md

@@ -37,7 +37,7 @@ $ python3 -m venv .venv　
 
 # Activate virtual environment
 $ source .venv/bin/activate # for Mac or Unix user
-$ ./venv/Scripts/activate # for Windows user
+$ .venv/Scripts/activate # for Windows user
 
 # Install required library
 $ pip install --upgrade pip setuptools wheel

document/02-local-env.ja.md

@@ -39,7 +39,7 @@ $ python3 -m venv .venv
 
 # 仮想環境をアクティベートする  
 $ source .venv/bin/activate  # Unix / Macの場合
-$ ./venv/Scripts/activate    # windowsの場合
+$ .venv/Scripts/activate    # windowsの場合
 
 # 今回使うPythonのパスを確認する。
 $ which python