Landing page fixes

[DzhideX]

Changes:

• Remove l1.media from ecosystem apps section
• Fix https://github.com/Joystream/joystream-org/issues/738
• Fix https://github.com/Joystream/joystream-org/issues/735

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Name	Status	Preview	Updated (UTC)
joystream-org	✅ Ready (Inspect)	Visit Preview	Dec 13, 2023 9:41am
joystream-org-storybook	✅ Ready (Inspect)	Visit Preview	Dec 13, 2023 9:41am
joystream-org-translation	✅ Ready (Inspect)	Visit Preview	Dec 13, 2023 9:41am