added curl request sample to the webpage as well

templates/upload.html

@@ -15,6 +15,8 @@
         <div>
             <label for="formFileLg" class="form-label">Upload your file</label>
             <input class="form-control form-control-lg" id="formFileLg" type="file" name="file">
+            <h3> or </h3>
+            <pre><code>curl http://localhost:8080/uploadCurl -F add=@&lt;file name&gt;</code></pre>
         </div>
         <input type="submit" value="Submit">
         {{ if .hash }}

templates/upload2.html

@@ -35,6 +35,8 @@
 									<h3> hash: {{ .hash }} </h3>
 									{{end}} -->
 								</form>
+                                <h3 style="color:white"> or </h3>
+                                <h4 style="color:white">curl http://localhost:8080/uploadCurl -F add=@&lt;file name&gt;</h4>
 								<!-- <a href="#" class="btn btn-white btn-outline-white" tyle="color:#3ac4e2">Upload file</a> -->
                                 <br>
 								<br>