Update HeroSection.svelte (#1685)

update title from web3-onboard to Web3 Onboard. When not referencing code we should stick to no dash

Author: laurencedelisle

docs/src/lib/components/HeroSection.svelte

@@ -8,7 +8,7 @@
 
 <section style="background-image: url({heroBg});">
   <div class="textblock">
-    <div class="title">{'Web3-Onboard'}</div>
+    <div class="title">{'Web3 Onboard'}</div>
     <div class="text">
       {'Open-source, framework-agnostic JavaScript library to onboard users to web3 apps. Help your users transact with ease by enabling wallet connection, real-time transaction states, and more.'}
     </div>