docs: drop redundant quotes from devnotes nav titles

YAML does not require quoting these titles — removing them keeps the
nav entries consistent with the surrounding lines.

Author: johnnygreco

mkdocs.yml

@@ -106,8 +106,8 @@ nav:
       - Have It Your Way: devnotes/posts/have-it-your-way.md
       - VLM Long Document Understanding: devnotes/posts/vlm-long-document-understanding.md
       - Push Datasets to Hugging Face Hub: devnotes/posts/push-datasets-to-hugging-face-hub.md
-      - "Text-to-SQL for Nemotron Super": devnotes/posts/text-to-sql.md
-      - "Async All the Way Down": devnotes/posts/async-all-the-way-down.md
+      - Text-to-SQL for Nemotron Super: devnotes/posts/text-to-sql.md
+      - Async All the Way Down: devnotes/posts/async-all-the-way-down.md
       - Owning the Model Stack: devnotes/posts/owning-the-model-stack.md
       - Data Designer Got Skills: devnotes/posts/data-designer-got-skills.md
       - Search Agent: devnotes/posts/search-agent.md