fix: template fix for null_card

erpnext/www/lms/course.html

@@ -96,7 +96,7 @@
 				{{ card(topic) }}
 			{% endfor %}
 			{% if topics %}
-				{% for n in range(((topics|length)%3)) %}
+				{% for n in range( (3 - (topics|length)) %3) %}
 					{{ null_card() }}
 				{% endfor %}
 			{% endif %}

erpnext/www/lms/index.html

@@ -55,7 +55,7 @@
 				{{ program_card(program.program, program.has_access) }}
 			{% endfor %}
 			{% if featured_programs %}
-				{% for n in range((featured_programs|length)%3) %}
+				{% for n in range( (3 - (featured_programs|length)) %3) %}
 					{{ null_card() }}
 				{% endfor %}
 			{% endif %}

erpnext/www/lms/program.html

@@ -77,7 +77,7 @@
 				{{ card(course) }}
 			{% endfor %}
 			{% if courses %}
-				{% for n in range((courses|length)%3) %}
+				{% for n in range( (3 - (courses|length)) %3) %}
 					{{ null_card() }}
 				{% endfor %}
 			{% endif %}

erpnext/www/lms/topic.html

@@ -48,7 +48,7 @@
 				{{ card(content, loop.index, topic.contents|length) }}
 			{% endfor %}
 			{% if contents %}
-				{% for n in range((contents|length)%3) %}
+				{% for n in range( (3 - (contents|length)) %3) %}
 					{{ null_card() }}
 				{% endfor %}
 			{% endif %}