Fixup list of reddit pages.

Author: epasveer

notes/README.announce

@@ -1,8 +1,9 @@
 Sites to announce new versions of Seer.
 
+https://www.reddit.com/r/cprogramming/
 https://www.reddit.com/r/cpp/
+https://www.reddit.com/r/fortran/
 https://www.reddit.com/r/ada/
-https://www.reddit.com/r/programming/
 https://www.reddit.com/r/gdb/
 https://www.reddit.com/r/linux/
 https://twitter.com/home