fix example script

update logo image meta text

Author: marle3003

docs/javascript-api/mokapi-encoding/base64-decode.md

@@ -22,6 +22,6 @@ Decodes a string value that is encoded with base-64 to its equivalent unencoded
 import { base64 } from 'mokapi/encoding'
 
 export default function() {
-    console.log(`The base64 decoded string of 'aGVsbG8gd29ybGQ=' is: ${base.decode('aGVsbG8gd29ybGQ=')}`)
+    console.log(`The base64 decoded string of 'aGVsbG8gd29ybGQ=' is: ${base64.decode('aGVsbG8gd29ybGQ=')}`)
 }
 ```

docs/javascript-api/mokapi-encoding/base64-encode.md

@@ -22,6 +22,6 @@ Encodes a string value to its equivalent string representation that is encoded w
 import { base64 } from 'mokapi/encoding'
 
 export default function() {
-    console.log(`The base64 encoding of 'hello world' is: ${base.encode('hello world')}`)
+    console.log(`The base64 encoding of 'hello world' is: ${base64.encode('hello world')}`)
 }
 ```

webui/src/views/Home.vue

@@ -56,7 +56,7 @@ function hasTouchSupport() {
             </p>
           </div>
           <div class="col-12 col-lg-5">
-            <img src="/logo.svg" alt="Mokapi API Mock Tool" class="mx-auto d-block" />
+            <img src="/logo.svg" alt="Mokapi logo with an okapi symbol representing friendly and elegant developer tooling" title="Mokapi – the okapi-inspired logo for modern API mocking" class="mx-auto d-block" />
           </div>
           <div class="col-12 d-block d-md-none">
             <p style="margin-top: 2rem;">