build: fix html meta tags

Signed-off-by: rare-magma <[email protected]>

index.html

@@ -13,13 +13,16 @@
   <meta name="author" content="rare-magma">
 
   <meta property="og:type" content="website" />
+  <meta property="og:description"
+    content="A personal budgeting app that helps you figure out where your money went, plan your budget ahead of time and analyze past expenditures." />
   <meta property="og:title" content="guitos, a personal budgeting app">
-  <meta property="og:image" content="/favicon.svg">
+  <meta property="og:image" content="https://guitos.app/favicon.svg">
   <meta property="og:url" content="https://guitos.app" />
   <meta property="og:locale" content="en_US" />
 
   <meta name="twitter:card" content="summary" />
   <meta name="twitter:site" content="@rare_magma" />
+  <meta name="twitter:image" content="https://guitos.app/favicon.svg">
   <meta name="twitter:creator" content="@rare_magma" />
   <meta name="twitter:title" content="guitos, a personal budgeting app" />
   <meta name="twitter:description"