add hemdall install

Change-Id: I153cb95fd78eeca382814ddd28b738c65a2bb0bf
diff --git a/_samsung/samsunggalaxym30s.markdown b/_samsung/samsunggalaxym30s.markdown
index d016860..116417a 100644
--- a/_samsung/samsunggalaxym30s.markdown
+++ b/_samsung/samsunggalaxym30s.markdown
@@ -17,4 +17,5 @@
 {% include download.html %}
 {% include twrpinstall.html %}
 {% include odininstall.html %}
+{% include heimdallinstall.html %}
 {% include ddinstall.html %}