fix dialog box padding

Signed-off-by: Matt Wrock <matt@mattwrock.com>

Author: mwrock

components/builder-web/stylesheets/_dialog.scss

@@ -1,3 +1,7 @@
+.mat-mdc-dialog-container .mdc-dialog__surface {
+  padding: 24px;
+}
+
 .dialog {
   color: $hab-text;