update: Embed internal link in FileVault section of macOS page

Signed-off-by: redoomed1 <[email protected]>

docs/os/macos-overview.md

@@ -121,7 +121,7 @@ Decide whether you want personalized ads based on your usage.
 
 ##### FileVault
 
-On modern devices with a Secure Enclave (Apple T2 Security Chip, Apple silicon), your data is always encrypted, but is decrypted automatically by a hardware key if your device doesn't detect it's been tampered with. Enabling FileVault additionally requires your password to decrypt your data, greatly improving security, especially when powered off or before the first login after powering on.
+On modern devices with a Secure Enclave (Apple T2 Security Chip, Apple silicon), your data is always encrypted, but is decrypted automatically by a hardware key if your device doesn't detect it's been tampered with. Enabling [FileVault](../encryption.md#filevault) additionally requires your password to decrypt your data, greatly improving security, especially when powered off or before the first login after powering on.
 
 On older Intel-based Mac computers, FileVault is the only form of disk encryption available by default, and should always be enabled.
 
@@ -233,7 +233,7 @@ We recommend against installing third-party antivirus software as they typically
 
 ##### Backups
 
-macOS comes with automatic backup software called [Time Machine](https://support.apple.com/HT201250), so you can create encrypted backups to an external or network drive in the event of corrupted/deleted files.
+macOS comes with automatic backup software called [Time Machine](https://support.apple.com/HT201250), so you can create encrypted backups to an external drive or a network drive in the event of corrupted/deleted files.
 
 ### Hardware Security