Fix typo in 2019 survey blog post (#680)

* Fix typo in 2019 survey blog post

* Update posts/2020-04-17-Rust-survey-2019.md

Co-authored-by: Camelid <[email protected]>

Co-authored-by: XAMPPRocky <[email protected]>

Author: camelid

posts/2020-04-17-Rust-survey-2019.md

@@ -33,7 +33,7 @@ Here is the language distribution of the responses we received.
 
 In the 2019 survey, 82.8% of responders indicated they used Rust, 7.1% indicated they did not currently use Rust but had used it in the past, and 10.1% indicated that they had never used Rust.
 
-If we compare this to the 2018 survey (where 75% of responders indicated they used Rust, 8% indicated the did not currently use Rust but had used it in the past, and 8% indicated they had never used Rust) more responders were using Rust in 2019.
+If we compare this to the 2018 survey – where 75% of responders indicated they used Rust, 8% indicated they did not currently use Rust but had used it in the past, and 8% indicated they had never used Rust – more responders were using Rust in 2019.
 
 ## Looking Back on Rust 2018