Add RTC model datasheets to package links

Author: jjcarstens

mix.exs

@@ -48,7 +48,13 @@ defmodule NervesTime.RTC.Abracon.MixProject do
         "CHANGELOG.md"
       ],
       licenses: ["Apache-2.0"],
-      links: %{"GitHub" => @source_url}
+      links: %{
+        "GitHub" => @source_url,
+        "AB-RTCMC-32.768kHz-IBO5-S3" =>
+          "https://abracon.com/Support/AppsManuals/Precisiontiming/Application%20Manual%20AB-RTCMC-32.768kHz-IBO5-S3.pdf",
+        "AB-RTCMC-32.768kHz-B5ZE-S3" =>
+          "https://abracon.com/realtimeclock/AB-RTCMC-32.768kHz-B5ZE-S3-Application-Manual.pdf"
+      }
     }
   end