docs: cast wallet import

cli/src/cmd/cast/wallet/mod.rs

@@ -106,8 +106,11 @@ pub enum WalletSubcommands {
     /// Import a private key into an encrypted keystore.
     #[clap(visible_alias = "i")]
     Import {
-        #[clap(help = "The name for the account in the keystore.", value_name = "ACCOUNT_NAME")]
+        /// The name for the account in the keystore.
+        #[clap(value_name = "ACCOUNT_NAME")]
         account_name: String,
+        /// If provided, keystore will be saved here instead of the default keystores directory
+        /// (~/.foundry/keystores)
         #[clap(long, short)]
         keystore_dir: Option<String>,
         #[clap(flatten)]

cli/src/opts/wallet/mod.rs

@@ -100,7 +100,7 @@ pub struct Wallet {
     )]
     pub keystore_path: Option<String>,
 
-    // Use a keystore from the default folder by its name
+    /// Use a keystore from the default keystores folder (~/.foundry/keystores) by its filename
     #[clap(
         long = "account",
         help_heading = "Wallet options - keystore",

cli/src/opts/wallet/multi_wallet.rs

@@ -153,7 +153,7 @@ pub struct MultiWallet {
     )]
     pub keystore_paths: Option<Vec<String>>,
 
-    // Use a keystore from the default folder by its name
+    /// Use a keystore from the default keystores folder (~/.foundry/keystores) by its filename
     #[clap(
         long = "account",
         visible_alias = "accounts",