removes extra the

ch07_the_dot_command.md

@@ -90,7 +90,7 @@ zlet zzthree = "3";
 let four = "4";
 ```
 
-Let's remove all the z's. Starting from the first character on the first line, visually select the only the first z from the first three lines with blockwise visual mode (`Ctrl-Vjj`). If you're not familiar with blockwise visual mode, I will cover them in a later chapter. Once you have the three z's visually selected, delete them with the delete operator (`d`). Then move to the next word (`w`) to the next z. Repeat the change two more times (`..`). The full command is `Ctrl-vjjdw..`.
+Let's remove all the z's. Starting from the first character on the first line, visually select only the first z from the first three lines with blockwise visual mode (`Ctrl-Vjj`). If you're not familiar with blockwise visual mode, I will cover them in a later chapter. Once you have the three z's visually selected, delete them with the delete operator (`d`). Then move to the next word (`w`) to the next z. Repeat the change two more times (`..`). The full command is `Ctrl-vjjdw..`.
 
 When you deleted a column of three z's (`Ctrl-vjjd`), it was counted as a change. Visual mode operation can be used to target multiple lines as part of a change.