Update template.liquid - swap capture to assign

Adafruit_IO_Template_Emails/template.liquid

@@ -62,11 +62,11 @@ Success rate: {{ success_rate }}% [{%- for i in (1..bar_filled) -%}█{%- endfor
 Keep being awesome!
 With love and high-fives! 🙌
 ---
-{%- capture event_mod -%}{{ total_events | modulo: 3 }}{%- endcapture %}
+{% assign event_mod = total_events | modulo: 3 %}
 {% if event_mod == 0 %}
 <i>P.S. Remember: Every expert was once a beginner - they're doing brilliantly! 🌟</i>
 {% elsif event_mod == 1 %}
 <i>P.S. Fun fact: Even superheroes had to learn to use the potty! 🦸</i>
 {% else %}
 <i>P.S. Remember: accidents are just practice in disguise! They're doing amazingly! 💕</i>
-{% endif %}
+{% endif %}