fix: Update Password Managers page

[redoomed1]

Changes proposed in this PR:

• Proton Pass
  • Remove the last section of the description
    • The Proton Mail card already mentions that the service is based in Switzerland (which is visible when hovering over the internal link), and the other pieces of information are, in my opinion, not useful for readers.
  • Bold the first instance of "Proton Pass" in the description for consistent styling
• 1Password
  • Remove the last paragraph below the 1Password card comparing 1Password to Bitwarden, and integrate the parts highlighting 1Password's features into the first paragraph
    • Reasoning for this is similar to what I wrote for the third bullet point in Standardize language on VPN Services page #2504
  • Unbold "1Password" in the first sentence of the text below the card for consistent styling
• Change the icons for Proton Pass's and 1Password's web app links so that they're consistent with the icons for other web app links (see the ones on the Calendar Sync page)
• Update Psono's description to mention its limited passkey support
• Fix grammar in the description for KeePassDX

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[dngray]

LGTM. I think we can merge this.

[privacyguides-bot]

This pull request has been mentioned on Privacy Guides. There might be relevant details there:

https://discuss.privacyguides.net/t/2024-07-15/19478/1