fix capa textline to properly use inline if specified when using js preprocessor

common/lib/capa/capa/templates/textline.html

@@ -3,7 +3,7 @@
 <section id="inputtype_${id}" class="${'text-input-dynamath' if do_math else ''} capa_inputtype ${doinline} textline" >
 
     % if preprocessor is not None:
-    <div class="text-input-dynamath_data" data-preprocessor="${preprocessor['class_name']}"/>
+    <div class="text-input-dynamath_data ${doinline}" data-preprocessor="${preprocessor['class_name']}"/>
     <div class="script_placeholder" data-src="${preprocessor['script_src']}"/>
     % endif