Added ToolTip for SeachBar

Author: linkdotnet

src/LinkDotNet.Blog.Web/Shared/SearchInput.razor

@@ -1,6 +1,6 @@
 <div class="search-bar">
     <input type="text" class="search-bar-input" placeholder="search" aria-label="search" @bind-value="searchTerm" 
-    @onkeyup="@CheckForEnter"/>
+    @onkeyup="@CheckForEnter" title="Search for blog post via title or tags"/>
     <button class="search-bar-button" aria-label="search submit" @onclick="CallSearchEntered"><i class="fas fa-search"></i></button>
 </div>