DOC-1068: Update Asana credential to medium tier template

[freakwriter]

Removed prerequisites section, converted general bullet point list to detailed numbered list, reordered to match app order.

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Overall readability score: 43.22 (🟢 +0.02)

File	Readability
asana.md	64.92 (🟢 +25.26)

View detailed metrics

🟢 - Shows an _increase_ in readability 🔴 - Shows a _decrease_ in readability File | Readability | FRE | GF | ARI | CLI | DCRS --- | --- | --- | --- | --- | --- | --- [asana.md](https://github.com/n8n-io/n8n-docs/blob/4d452a3d9a28d0f9a05d674cd000d9d91a64398d/docs/integrations/builtin/credentials/asana.md "docs/integrations/builtin/credentials/asana.md") | 64.92 | 36.15 | 6.85 | 11.5 | 12.91 | 6.56   | 🟢 +25.26 | 🟢 +4.67 | 🟢 +4.45 | 🟢 +4.3 | 🟢 +3.15 | 🟢 +1.92 Averages:   | Readability | FRE | GF | ARI | CLI | DCRS --- | --- | --- | --- | --- | --- | --- Average | 43.22 | 34.91 | 11.66 | 14.86 | 14.34 | 8.53   | 🟢 +0.02 | 🟢 +0 | 🟢 +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