Add footer contact links

docusaurus.config.js

@@ -105,7 +105,7 @@ const config = {
         style: 'dark',
         links: [
           {
-            title: 'This site sections',
+            title: 'This site sections:',
             items: [
               {
                 label: 'Blog',
@@ -121,7 +121,19 @@ const config = {
               },
             ],
           },
-
+          {
+            title: 'Feel free to contact me with questions and/or criticisms:',
+            items: [
+              {
+                label: 'Matrix',
+                to: 'https://matrix.to/#/@yehor:vi.place',
+              },
+              {
+                label: 'Mastodon',
+                to: 'https://techhub.social/@estevez',
+              },
+            ],
+          },
 
         ],
         copyright: `Copyright © ${new Date().getFullYear()} Yehor Vialov.`,