Consistent formatting for mobile wallet page

Just formatting recent changes to make them consistent with the rest of
the site:

- Use bullets for lists
- Second level headers instead of third
- Separate sections with <hr>

Also added a link for "SPV" to the SPV page.

Author: jholdstock

docs/wallets/mobile-wallets.md

@@ -2,22 +2,31 @@
 
 ---
 
-### Mobile Wallets
+## Mobile Wallets
+
 Decred is supported on multiple mobile wallet platforms for both Android and iOS:
 
-[Cake Wallet](https://cakewallet.com/): Privacy-focused, open-source multi-chain wallet
+- [Cake Wallet](https://cakewallet.com/): Privacy-focused, open-source multi-chain wallet
+- [Exodus](https://www.exodus.com/): Multi-chain wallet with intuitive design
+- [Trust Wallet](https://trustwallet.com/): Popular multi-chain wallet
+
+---
 
-[Exodus](https://www.exodus.com/): Multi-chain wallet with intuitive design
+## Architecture and Privacy Considerations
 
-[Trust Wallet](https://trustwallet.com/): Popular multi-chain wallet
+Mobile wallets do not download and validate the entire Decred blockchain like desktop wallets.
+Instead, they use lightweight methods to minimize system resource usage and data consumption:
 
-### Architecture and Privacy Considerations
-Mobile wallets do not download and validate the entire Decred blockchain like desktop wallets. Instead, they use lightweight methods to minimize system resource usage and data consumption:
+- Cake Wallet uses [SPV](spv.md) (Simplified Payment Verification) mode for Decred, which connects directly to the blockchain network and validates block headers.
+  This provides better privacy and decentralization compared to server-based architectures, making Cake Wallet the preferred option for mobile users.
+  Cake Wallet is also maintained by Decred developers via Politeia proposal.
 
-Cake Wallet uses SPV (Simplified Payment Verification) mode for Decred, which connects directly to the blockchain network and validates block headers. This provides better privacy and decentralization compared to server-based architectures, making Cake Wallet the preferred option for mobile users. Cake Wallet is also maintained by Decred developers via Politeia proposal.
+- Exodus and Trust Wallet use RPC (Remote Procedure Call) connections to remote servers/nodes to retrieve blockchain data.
+  While convenient, this approach relies on third-party infrastructure and may have different privacy characteristics.
 
-Exodus and Trust Wallet use RPC (Remote Procedure Call) connections to remote servers/nodes to retrieve blockchain data. While convenient, this approach relies on third-party infrastructure and may have different privacy characteristics.
+---
 
-### Proof-of-Stake and Privacy Participation
+## Proof-of-Stake and Privacy Participation
 
-Mobile wallets do not support Proof-of-Stake participation (ticket buying and voting) or privacy mixing. If you want to mix, participate in Decred's PoS consensus system and earn staking rewards, please use a desktop wallet instead.
+Mobile wallets do not support Proof-of-Stake participation (ticket buying and voting) or privacy mixing.
+If you want to mix, participate in Decred's PoS consensus system and earn staking rewards, please use a desktop wallet instead.