new screenshots for calling section

[SuDa2103]

• Replaced Jetbrains command pallette screenshot to make it wider
• Replaced vscode follow cursor screenshot to make it smaller

[github-actions[bot]]

Visit the preview URL for this PR (updated for commit 69e1c62):

https://gitlive-docs--pr54-calling-v2-wf4n2tn0.web.app

_{(expires Wed, 28 Apr 2021 13:38:49 GMT)}

_{🔥 via Firebase Hosting GitHub Action 🌎}