chore: fix some comments (#508)

Signed-off-by: riskrole <yuhang@before.tech>

Author: riskrole

examples/webpack-example/README.md

@@ -1,5 +1,5 @@
 # `steem-js` webpack configuration example
-This is a demo of `steem-js` and webpack usage targetting both the Web and
+This is a demo of `steem-js` and webpack usage targeting both the Web and
 Node.js platforms.
 
 ## Compiling the example

src/auth/ecc/src/aes.js

@@ -12,7 +12,7 @@ const Long = ByteBuffer.Long;
     Spec: http://localhost:3002/steem/@dantheman/how-to-encrypt-a-memo-when-transferring-steem
     @throws {Error|TypeError} - "Invalid Key, ..."
     @arg {PrivateKey} private_key - required and used for decryption
-    @arg {PublicKey} public_key - required and used to calcualte the shared secret
+    @arg {PublicKey} public_key - required and used to calculate the shared secret
     @arg {string} [nonce = uniqueNonce()] - assigned a random unique uint64
 
     @return {object}
@@ -27,7 +27,7 @@ export function encrypt(private_key, public_key, message, nonce = uniqueNonce())
 /**
     Spec: http://localhost:3002/steem/@dantheman/how-to-encrypt-a-memo-when-transferring-steem
     @arg {PrivateKey} private_key - required and used for decryption
-    @arg {PublicKey} public_key - required and used to calcualte the shared secret
+    @arg {PublicKey} public_key - required and used to calculate the shared secret
     @arg {string} nonce - random or unique uint64, provides entropy when re-using the same private/public keys.
     @arg {Buffer} message - Encrypted or plain text message
     @arg {number} checksum - shared secret checksum

src/auth/ecc/src/key_private.js

@@ -20,7 +20,7 @@ class PrivateKey {
 
     static fromBuffer(buf) {
         if (!Buffer.isBuffer(buf)) {
-            throw new Error("Expecting paramter to be a Buffer type");
+            throw new Error("Expecting parameter to be a Buffer type");
         }
         if (32 !== buf.length) {
             console.log(`WARN: Expecting 32 bytes, instead got ${buf.length}, stack trace:`, new Error().stack);

src/auth/ecc/src/signature.js

@@ -71,7 +71,7 @@ class Signature {
     */
     static signBufferSha256(buf_sha256, private_key) {
         if( buf_sha256.length !== 32 || ! Buffer.isBuffer(buf_sha256) )
-            throw new Error("buf_sha256: 32 byte buffer requred")
+            throw new Error("buf_sha256: 32 byte buffer required")
         private_key = toPrivateObj(private_key)
         assert(private_key, 'private_key required')
 

test/KeyFormats.js

@@ -4,7 +4,7 @@ import assert from "assert"
 var test = function(key) {
     describe("steem.auth: key_formats", function() {
 
-        it("Calcualtes public key from private key", function() {
+        it("Calculates public key from private key", function() {
             var private_key = PrivateKey.fromHex(key.private_key);
             var public_key = private_key.toPublicKey();
             assert.equal(key.public_key, public_key.toPublicKeyString());