Restricting file input to .md files for Markdown to PDF conversion

src/main/resources/templates/convert/markdown-to-pdf.html

@@ -18,7 +18,7 @@
                 <span class="tool-header-text" th:text="#{MarkdownToPDF.header}"></span>
               </div>
               <form method="post" enctype="multipart/form-data" th:action="@{'/api/v1/convert/markdown/pdf'}">
-                <div th:replace="~{fragments/common :: fileSelector(name='fileInput', multipleInputsForSingleRequest=false, accept='text/markdown')}"></div>
+                <div th:replace="~{fragments/common :: fileSelector(name='fileInput', multipleInputsForSingleRequest=false, accept='.md')}"></div>
                 <button type="submit" id="submitBtn" class="btn btn-primary" th:text="#{MarkdownToPDF.submit}"></button>
               </form>
               <p class="mt-3" th:text="#{MarkdownToPDF.help}"></p>