Fix Typos in Comments and Documentation (#1677)

* Update karma.conf.js

* Update responses.ts

* Update utf8.ts

Author: vtjl10

packages/encoding/src/utf8.ts

@@ -16,7 +16,7 @@ export function toUtf8(str: string): Uint8Array {
  * Takes UTF-8 data and decodes it to a string.
  *
  * In lossy mode, the [REPLACEMENT CHARACTER](https://en.wikipedia.org/wiki/Specials_(Unicode_block))
- * is used to substitude invalid encodings.
+ * is used to substitute invalid encodings.
  * By default lossy mode is off and invalid data will lead to exceptions.
  */
 export function fromUtf8(data: Uint8Array, lossy = false): string {

packages/tendermint-rpc/src/tendermint37/adaptor/responses.ts

@@ -778,7 +778,7 @@ interface RpcBlock {
     /** Raw tx bytes, base64 encoded */
     readonly txs?: readonly string[];
   };
-  // It's currently unclear why the deep nesting is requied.
+  // It's currently unclear why the deep nesting is required.
   // See https://github.com/tendermint/tendermint/issues/7697.
   readonly evidence?: {
     readonly evidence?: readonly RpcEvidence[];