flyci: detach daemon after deployment

Otherwise the github action hangs on the job.
I should open an issue regarding this on fly's tracker.

Signed-off-by: Gunwant Jain <mail@wantguns.dev>

.github/workflows/flyci.yml

@@ -17,4 +17,4 @@ jobs:
         - uses: actions/checkout@v2
         - uses: superfly/flyctl-actions@1.1
           with:
-            args: "deploy"
+            args: "deploy --detach"

templates/index.html.tera

@@ -34,7 +34,7 @@ SEE ALSO
         </div>
         <div class="selectBox">
             <select id="ext" name="ext" size="15">
-                <option value="txt">Plain Text</option>
+                <option selected value="txt">Plain Text</option>
                 <option value=".env">DotENV</option>
                 <option value=".git">Git Link</option>
                 <option value=".mailmap">Git Mailmap</option>