further bug fixes when using context path (#1475)

Co-authored-by: Anthony Stirling <77850077+Frooodle@users.noreply.github.com>

src/main/resources/templates/misc/ocr-pdf.html

@@ -39,7 +39,7 @@
                 <span class="material-symbols-rounded tool-header-icon other">quick_reference_all</span>
                 <span class="tool-header-text" th:text="#{ocr.header}"></span>
               </div>
-              <form th:if="${#lists.size(languages) > 0}" action="#" th:action="@{api/v1/misc/ocr-pdf}" method="post" enctype="multipart/form-data" class="mb-3">
+              <form th:if="${#lists.size(languages) > 0}" action="#" th:action="@{'/api/v1/misc/ocr-pdf'}" method="post" enctype="multipart/form-data" class="mb-3">
                 <div th:replace="~{fragments/common :: fileSelector(name='fileInput', multiple=false, accept='application/pdf')}"></div>
                 <div class="mb-3">
                   <label for="languages" class="form-label" th:text="#{ocr.selectText.1}"></label>