feat: add accessibility link (#9)

* feat: add accessibility link

* feat: add a test for the accessibility link

* refactor: lint

Author: asadali145

src/components/Footer.jsx

@@ -80,6 +80,7 @@ class SiteFooter extends React.Component {
                 {this.renderLinkIfExists(process.env.PRIVACY_POLICY_URL, 'Privacy Policy')}
                 {this.renderLinkIfExists(process.env.HONOR_CODE_URL, 'Honor Code')}
                 {this.renderLinkIfExists(process.env.Contact, 'Contact')}
+                {this.renderLinkIfExists(process.env.ACCESSIBILITY_URL, 'Accessibility')}
                 {this.renderLinkIfExists(process.env.SUPPORT_CENTER_URL, process.env.SUPPORT_CENTER_TEXT || 'FAQ & Help')}
               </ul>
             </div>

src/components/__snapshots__/Footer.test.jsx.snap

@@ -63,6 +63,13 @@ exports[`<Footer /> renders correctly renders with a language selector 1`] = `
               Honor Code
             </a>
           </li>
+          <li>
+            <a
+              href="https://accessibility.mit.edu/"
+            >
+              Accessibility
+            </a>
+          </li>
           <li>
             <a
               href="http://localhost:18000/about"
@@ -182,6 +189,13 @@ exports[`<Footer /> renders correctly renders without a language selector 1`] =
               Honor Code
             </a>
           </li>
+          <li>
+            <a
+              href="https://accessibility.mit.edu/"
+            >
+              Accessibility
+            </a>
+          </li>
           <li>
             <a
               href="http://localhost:18000/about"
@@ -262,6 +276,13 @@ exports[`<Footer /> renders correctly renders without a language selector in es
               Honor Code
             </a>
           </li>
+          <li>
+            <a
+              href="https://accessibility.mit.edu/"
+            >
+              Accessibility
+            </a>
+          </li>
           <li>
             <a
               href="http://localhost:18000/about"

src/setupTest.js

@@ -31,3 +31,4 @@ process.env.SITE_URL = 'http://localhost:18000/';
 process.env.LOGO_ALT_TEXT = 'alt text';
 process.env.SHOW_LOGO = true;
 process.env.SUPPORT_EMAIL = '[email protected]';
+process.env.ACCESSIBILITY_URL = 'https://accessibility.mit.edu/';