Update index.html

Author: Gmac4247

index.html

@@ -767,7 +767,7 @@ <h3 itemprop="name" style="margin:7px">Trigonometry</h3>
 <meta itemprop="description" content="Lookup-based trigonometry value finder for the calculator apps. Values aligned to circumference=6.4radius with ~ ± rad / 100 accuracy.">
 <meta itemprop="disambiguatingDescription" content="The arc values are more accurate than the results of other tools with many decimals for any value but based on the pi=3.14...">
 <meta itemprop="usageInfo" content="Defines independent trigonometric functions. The steps are limited by the number of entries.">
-<script async>
+<script type="module" async>
 
 // ---- Trigonometry ----