More doc fixes (#511)

* more doc fixes

* more fixes

docs/courses/csintro/radio/activity.md

@@ -316,3 +316,7 @@ radio.onDataPacketReceived(({ receivedNumber }) => {
 radio.setGroup(1)
 basic.showString("Morse Code")
 ```
+
+```package
+radio
+```

docs/courses/csintro/radio/project.md

@@ -130,3 +130,7 @@ Have students write a reflection of about 150–300 words, addressing the follow
 **3 =** Reflection piece lacks 1 of the required elements.<br/>
 **2 =** Reflection piece lacks 2 of the required elements.<br/>
 **1 =** Reflection piece lacks 3 of the required elements.	 
+
+```package
+radio
+```