Use same default font as ADO for the history.

Author: Sedeniono

src/historydiff.html

@@ -8,6 +8,13 @@
     <meta charset="UTF-8">
     <title>History</title>
     <style>
+        body {
+            /* Set same default font as in ADO: https://developer.microsoft.com/en-us/azure-devops/develop/styles */
+            font-family: "Segoe UI", "-apple-system", BlinkMacSystemFont, Roboto, "Helvetica Neue", Helvetica, Ubuntu, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
+            -webkit-font-smoothing: antialiased;
+            font-size: 14px;
+            font-weight: 400;
+        }
         del.diffCls {
             display: inline-block;
             text-decoration: none;