make sure these are links

Author: steveklabnik

_posts/2017-02-02-Rust-1.15.md

@@ -268,12 +268,14 @@ committed to Cargo weren't thanked, for example. We also had to manually
 generate this list, which wasn't terrible, but running the correct git commands
 to determine who contributed is exactly what code is good for!
 
-As such, you can now visit https://thanks.rust-lang.org/ to see more
+As such, you can now visit
+[https://thanks.rust-lang.org/](https://thanks.rust-lang.org/) to see more
 comprehensive contribution calculations. If you prefer, we also have an alias
-at https://❤.rust-lang.org as well. For now, this will only show what we've
-shown in previous release posts. We do have one additional feature, which is an
-all-time contributions list, sorted by commit count. That's located here:
-https://thanks.rust-lang.org/rust/all-time
+at [https://❤.rust-lang.org](https://❤.rust-lang.org) as well. For now, this
+will only show what we've shown in previous release posts. We do have one
+additional feature, which is an all-time contributions list, sorted by commit
+count. That's located here:
+[https://thanks.rust-lang.org/rust/all-time](https://thanks.rust-lang.org/rust/all-time)
 
 We have done some of the needed backend work to enable more repositories than
 only `rust-lang/rust`, but it's not quite done yet. If you'd like to get