Merge pull request #1061 from mattlehrer/patch-1

Update maps.livemd - Fix arrow description

reading/maps.livemd

@@ -43,7 +43,7 @@ Upon completing this lesson, a student should be able to answer the following qu
 
 Maps are another type of associative data structure. You can create a map using `%{}`. Maps can use almost any elixir term as a key. However, most commonly we use strings and atoms for map keys.
 
-Maps have a key and a value separated by an arrow `=>`, which is an equals symbol `=` and a less than symbol `>`.
+Maps have a key and a value separated by an arrow `=>`, which is an equals symbol `=` and a greater than symbol `>`.
 
 ```elixir
 # String Keys