Fix tutorial icon (#1594)

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> [!IMPORTANT]
> Fixes tutorial title and updates icon for PII Data Extraction in
documentation.
> 
>   - **Documentation**:
> - Change tutorial title in `action-items.mdx` from "Tutorial:
Extracting Action Items from Meeting Transcripts" to "Extracting Action
Items from Meeting Transcripts".
> - Update icon for "PII Data Extraction / Scrubbing" in `docs.yml` from
`fa-regular fa-shield` to `fa-regular fa-user-cog`.
> 
> <sup>This description was created by </sup>[<img alt="Ellipsis"
src="https://img.shields.io/badge/Ellipsis-blue?color=175173">](https://www.ellipsis.dev?ref=BoundaryML%2Fbaml&utm_source=github&utm_medium=referral)<sup>
for 4c55295. It will automatically
update as commits are pushed.</sup>

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Author: mpyen3

fern/docs.yml

@@ -220,7 +220,7 @@ navigation:
             icon: fa-regular fa-adjust
             path: 01-guide/06-prompt-engineering/symbol-tuning.mdx
           - page: PII Data Extraction / Scrubbing
-            icon: fa-regular fa-shield
+            icon: fa-regular fa-user-cog
             path: 01-guide/06-prompt-engineering/pii-data-extraction.mdx
           - page: Action Item Extraction
             icon: fa-regular fa-list-check