ch11: change "in a different location" to "at a different location"

ch11.asciidoc

@@ -62,7 +62,7 @@ As mentioned in <<ch04_keys_addresses>>, paper wallets are an OBSOLETE technolog
 
 [WARNING]
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-((("warnings and cautions", "mnemonic storage")))((("Shamir's Secret Sharing")))Do not split your list of mnemonic words into multiple fragments with the intention to store each fragment in a different location. This is not a good idea. It is not secure because it's possible for an attacker to derive the seed from a fragment, and more likely, you'll lose your bitcoin if any fragment is lost. Instead, check if your wallet supports Shamir's Secret Sharing, which is more secure and less prone to accidental loss (follow the vendor's instructions carefully). If you are concerned that someone might access the mnemonic at a remote location, adding a BIP-39 passphrase to the mnemonic is another option, though it introduces the risk of loss when the passphrase is forgotten (see <<ch05_wallets>>). In general, do not invent fancy security schemes on your own. A lot of bitcoin has been lost forever because of non-standard "do-it-yourself" security that could not be unlocked by the owner.
+((("warnings and cautions", "mnemonic storage")))((("Shamir's Secret Sharing")))Do not split your list of mnemonic words into multiple fragments with the intention to store each fragment at a different location. This is not a good idea. It is not secure because it's possible for an attacker to derive the seed from a fragment, and more likely, you'll lose your bitcoin if any fragment is lost. Instead, check if your wallet supports Shamir's Secret Sharing, which is more secure and less prone to accidental loss (follow the vendor's instructions carefully). If you are concerned that someone might access the mnemonic at a remote location, adding a BIP-39 passphrase to the mnemonic is another option, though it introduces the risk of loss when the passphrase is forgotten (see <<ch05_wallets>>). In general, do not invent fancy security schemes on your own. A lot of bitcoin has been lost forever because of non-standard "do-it-yourself" security that could not be unlocked by the owner.
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 ==== Hardware Wallets