docs: typo in protocol fetch (#2638)

my -> by

Author: dozyio

packages/protocol-fetch/README.md

@@ -43,7 +43,7 @@ const libp2p = await createLibp2p({
 
 // Given a key (as a string) returns a value (as a Uint8Array), or undefined
 // if the key isn't found.
-// All keys must be prefixed my the same prefix, which will be used to find
+// All keys must be prefixed by the same prefix, which will be used to find
 // the appropriate key lookup function.
 async function my_subsystem_key_lookup (key: string): Promise<Uint8Array | undefined> {
   // app specific callback to lookup key-value pairs.

packages/protocol-fetch/src/index.ts

@@ -20,7 +20,7 @@
  *
  * // Given a key (as a string) returns a value (as a Uint8Array), or undefined
  * // if the key isn't found.
- * // All keys must be prefixed my the same prefix, which will be used to find
+ * // All keys must be prefixed by the same prefix, which will be used to find
  * // the appropriate key lookup function.
  * async function my_subsystem_key_lookup (key: string): Promise<Uint8Array | undefined> {
  *   // app specific callback to lookup key-value pairs.