add https rule for conan.io (#20002)

https://github.com/conan-io/website/issues/35

Author: wesinator

src/chrome/content/rules/conan.io.xml

@@ -0,0 +1,11 @@
+<ruleset name="conan.io">
+	<target host="conan.io" />
+	<target host="*.conan.io" />
+
+	<rule from="^http:" to="https:" />
+
+	<test url="http://www.conan.io/" />
+	<test url="http://conan.io/center/" />
+	<test url="http://blog.conan.io/" />
+	<test url="http://docs.conan.io/en/latest/" />
+</ruleset>