fix: added missing closing brackets in Chp 6 README.md

[shahpreetk]

The code examples in chapter 6 were missing closing brackets for their examples. As part of this PR, I have added the closing brackets.

[github-actions]

👋 Thanks for contributing @shahpreetk! We will review the pull request and get back to you soon.

[shahpreetk]

@microsoft-github-policy-service agree

[github-actions]

Check Broken URLs

We have automatically detected the following broken URLs in your files. Review and fix the paths to resolve this issue.

Check the file paths and associated broken URLs inside them. For more details, check our Contributing Guide.

File Full Path	Issues
README.md	# Link Line Number 1 https://dcbadge.vercel.app/api/server/ByRwuEEgH4 15
07-building-chat-applications/python/aoai-assignment.ipynb	# Link Line Number 1 https://techcommunity.microsoft.com/t5/educator-developer-blog/azure-openai-is-now-generally-available/ba-p/3719177?WT.mc_id=academic-105485-koreyst 80
translations/ko/README.md	# Link Line Number 1 https://dcbadge.vercel.app/api/server/ByRwuEEgH4 16
translations/tw/README.md	# Link Line Number 1 https://dcbadge.vercel.app/api/server/ByRwuEEgH4 15
translations/ja-jp/README.md	# Link Line Number 1 https://dcbadge.vercel.app/api/server/ByRwuEEgH4 16
translations/es-mx/README.md	# Link Line Number 1 https://dcbadge.vercel.app/api/server/ByRwuEEgH4 16
translations/cn/README.md	# Link Line Number 1 https://dcbadge.vercel.app/api/server/ByRwuEEgH4 16
translations/pt-br/README.md	# Link Line Number 1 https://dcbadge.vercel.app/api/server/ByRwuEEgH4 16 2 https://dcbadge.vercel.app/api/server/ByRwuEEgH4 34
00-course-setup/README.md	# Link Line Number 1 https://dcbadge.vercel.app/api/server/ByRwuEEgH4 132
00-course-setup/translations/ko/README.md	# Link Line Number 1 https://dcbadge.vercel.app/api/server/ByRwuEEgH4 117
00-course-setup/translations/tw/README.md	# Link Line Number 1 https://dcbadge.vercel.app/api/server/ByRwuEEgH4 130
00-course-setup/translations/ja-jp/README.md	# Link Line Number 1 https://dcbadge.vercel.app/api/server/ByRwuEEgH4 121
00-course-setup/translations/es-mx/README.md	# Link Line Number 1 https://dcbadge.vercel.app/api/server/ByRwuEEgH4 121
00-course-setup/translations/cn/README.md	# Link Line Number 1 https://dcbadge.vercel.app/api/server/ByRwuEEgH4?WT.mc_id=academic-105485-koreyst 85
00-course-setup/translations/pt-br/README.md	# Link Line Number 1 https://dcbadge.vercel.app/api/server/ByRwuEEgH4 117
04-prompt-engineering-fundamentals/README.md	# Link Line Number 1 https://python.langchain.com/docs/modules/model_io/prompts/prompt_templates/?WT.mc_id=academic-105485-koreyst 284
04-prompt-engineering-fundamentals/translations/ko/README.md	# Link Line Number 1 https://python.langchain.com/docs/modules/model_io/prompts/prompt_templates/?WT.mc_id=academic-105485-koreyst 273
04-prompt-engineering-fundamentals/translations/tw/README.md	# Link Line Number 1 https://python.langchain.com/docs/modules/model_io/prompts/prompt_templates/?WT.mc_id=academic-105485-koreyst 278
04-prompt-engineering-fundamentals/translations/ja-jp/README.md	# Link Line Number 1 https://python.langchain.com/docs/modules/model_io/prompts/prompt_templates/?WT.mc_id=academic-105485-yoterada 298
04-prompt-engineering-fundamentals/translations/cn/README.md	# Link Line Number 1 https://python.langchain.com/docs/modules/model_io/prompts/prompt_templates/?WT.mc_id=academic-105485-koreyst 271
04-prompt-engineering-fundamentals/translations/pt-br/README.md	# Link Line Number 1 https://python.langchain.com/docs/modules/model_io/prompts/prompt_templates/?WT.mc_id=academic-105485-koreyst 277
17-ai-agents/translations/tw/README.md	# Link Line Number 1 https://python.langchain.com/docs/modules/agents/?WT.mc_id=academic-105485-koreyst 41
16-open-source-models/README.md	# Link Line Number 1 https://opensource.org/osd?WT.mc_id=academic-105485-koreyst 15
16-open-source-models/translations/tw/README.md	# Link Line Number 1 https://opensource.org/osd?WT.mc_id=academic-105485-koreyst 15
03-using-generative-ai-responsibly/translations/ja-jp/README.md	# Link Line Number 1 https://techcommunity.microsoft.com/t5/fasttrack-for-azure/grounding-llms/ba-p/3843857?WT.mc_id=academic-105485-yoterada 109