Add Multi-signature to the Glossary

[germartinez]

Context

This PR:

• Adds "Multi-signature" to the Glossary

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Branch preview

✅ Deployed successfully in branch deployment:

https://update_glossary--docs.review.5afe.dev

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Overall readability score: 51.43 (🔴 -0.03)

File	Readability
glossary.md	55.8 (🟢 +0.25)

View detailed metrics

🟢 - Shows an _increase_ in readability 🔴 - Shows a _decrease_ in readability File | Readability | FRE | GF | ARI | CLI | DCRS --- | --- | --- | --- | --- | --- | --- [glossary.md](https://github.com/safe-global/safe-docs/blob/70d1f0799757b4503a9a91facbc01380bb686b96/pages/home/glossary.md "pages/home/glossary.md") | 55.8 | 39.33 | 10.24 | 12.2 | 13.22 | 7.3   | 🟢 +0.25 | 🟢 +0.1 | 🔴 -0.12 | 🟢 +0.1 | 🟢 +0.05 | 🟢 +0.07 Averages:   | Readability | FRE | GF | ARI | CLI | DCRS --- | --- | --- | --- | --- | --- | --- Average | 51.43 | 45.48 | 11.41 | 13.78 | 12.95 | 7.76   | 🔴 -0.03 | 🔴 -0.09 | 🟢 +0 | 🟢 +0 | 🟢 +0 | 🟢 +0

View metric targets

Metric | Range | Ideal score --- | --- | --- Flesch Reading Ease | 100 (very easy read) to 0 (extremely difficult read) | 60 Gunning Fog | 6 (very easy read) to 17 (extremely difficult read) | 8 or less Auto. Read. Index | 6 (very easy read) to 14 (extremely difficult read) | 8 or less Coleman Liau Index | 6 (very easy read) to 17 (extremely difficult read) | 8 or less Dale-Chall Readability | 4.9 (very easy read) to 9.9 (extremely difficult read) | 6.9 or less

[germartinez]

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