Fix a word typo

ch07_the_dot_command.md

@@ -116,4 +116,4 @@ The dot command's power comes from exchanging several keystrokes for one. It is
 
 When editing, think about repeatability. For example, if I need to remove the next three words, is it more economical to use `d3w` or to do `dw` then `.` two times? Will you be deleting a word again? If so, then it makes sense to use `dw` and repeat it several times instead of `d3w` because `dw` is more reusable than `d3w`. 
 
-The dot command is the simpversatile command for automating single changes. In a later chapter, you will learn how to automate more complex actions with Vim macros. But first, let's learn about registers to store and retrieve text.
+The dot command is a versatile command for automating single changes. In a later chapter, you will learn how to automate more complex actions with Vim macros. But first, let's learn about registers to store and retrieve text.