style: use system theme by default

docusaurus.config.js

@@ -75,6 +75,10 @@ const config = {
   themeConfig:
     /** @type {import('@acid-info/logos-docusaurus-preset').ThemeConfig} */
     ({
+      colorMode: {
+        disableSwitch: false,
+        respectPrefersColorScheme: true,
+      },
       navbar: {
         hideOnScroll: true,
         items: [

src/pages/index.mdx

@@ -53,7 +53,7 @@ import {
     {
       title: 'Private',
       description:
-        'Waku uses cutting-edge zero-knowledge technology to protect applications from Denial of Service attacks. Tailor your application's privacy settings to suit your needs.',
+        'Waku uses cutting-edge zero-knowledge technology to protect applications from Denial of Service attacks. Tailor your application\'s privacy settings to suit your needs.',
     },
     {
       title: 'Censorship resistant',