fix: correct Node.js version support for docs site

[ehmicky]

We dropped Node 10 version support, but forgot to fix the version support for the docs site. This PR fixes it.

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[github-actions]

📊 Benchmark results

Comparing with 8495593

Package size: 363 MB

(no change)

^ 363 MB 363 MB 363 MB 363 MB 363 MB 364 MB 364 MB 365 MB 365 MB 365 MB 365 MB 365 MB 363 MB │ ┌──┐ ┌──┐ ┌──┐ ┌──┐ ┌──┐ ┌──┐ ┌──┐ ┌──┐ ┌──┐ ┌──┐ ┌──┐ ┌──┐ ┌──┐ │ | | | | | | | | | | | | | | | | | | | | | | | | |▒▒| │ | | | | | | | | | | | | | | | | | | | | | | | | |▒▒| │ | | | | | | | | | | | | | | | | | | | | | | | | |▒▒| │ | | | | | | | | | | | | | | | | | | | | | | | | |▒▒| │ | | | | | | | | | | | | | | | | | | | | | | | | |▒▒| │ | | | | | | | | | | | | | | | | | | | | | | | | |▒▒| │ | | | | | | | | | | | | | | | | | | | | | | | | |▒▒| │ | | | | | | | | | | | | | | | | | | | | | | | | |▒▒| │ | | | | | | | | | | | | | | | | | | | | | | | | |▒▒| │ | | | | | | | | | | | | | | | | | | | | | | | | |▒▒| │ | | | | | | | | | | | | | | | | | | | | | | | | |▒▒| │ | | | | | | | | | | | | | | | | | | | | | | | | |▒▒| │ | | | | | | | | | | | | | | | | | | | | | | | | |▒▒| │ | | | | | | | | | | | | | | | | | | | | | | | | |▒▒| │ | | | | | | | | | | | | | | | | | | | | | | | | |▒▒| │ | | | | | | | | | | | | | | | | | | | | | | | | |▒▒| │ | | | | | | | | | | | | | | | | | | | | | | | | |▒▒| │ | | | | | | | | | | | | | | | | | | | | | | | | |▒▒| │ | | | | | | | | | | | | | | | | | | | | | | | | |▒▒| │ | | | | | | | | | | | | | | | | | | | | | | | | |▒▒| └───┴──┴────┴──┴────┴──┴────┴──┴────┴──┴────┴──┴────┴──┴────┴──┴────┴──┴────┴──┴────┴──┴────┴──┴────┴──┴──> T-12 T-11 T-10 T-9 T-8 T-7 T-6 T-5 T-4 T-3 T-2 T-1 T 

Legend

• T-30 (8495593): 363 MB
• T-29 (c677d27): 363 MB
• T-28 (e4c6424): 363 MB
• T-27 (42e5dfc): 363 MB
• T-26 (41fbb0d): 363 MB
• T-25 (ee166eb): 363 MB
• T-24 (20bcf80): 363 MB
• T-23 (ac5ff5c): 363 MB
• T-22 (fe516be): 363 MB
• T-21 (2b2ed9c): 363 MB
• T-20 (a58a3fb): 363 MB
• T-19 (7189009): 363 MB
• T-18 (e227baa): 363 MB
• T-17 (3879de4): 363 MB
• T-16 (96769e4): 363 MB
• T-15 (8b7e2d5): 363 MB
• T-14 (4038b53): 363 MB
• T-13 (c61d102): 363 MB
• T-12 (15b8711): 363 MB
• T-11 (1ceeff5): 363 MB
• T-10 (4274cb8): 363 MB
• T-9 (68465dd): 363 MB
• T-8 (6cf4e19): 363 MB
• T-7 (82c16ea): 364 MB
• T-6 (f002840): 364 MB
• T-5 (1527999): 365 MB
• T-4 (1173c57): 365 MB
• T-3 (8e3d9e7): 365 MB
• T-2 (f1be3e3): 365 MB
• T-1 (db58c4a): 365 MB
• T (current commit): 363 MB