fix typo

Author: snitin315

src/content/configuration/dev-server.mdx

@@ -607,7 +607,7 @@ To pass your own certificate via the CLI use the following options:
 npx webpack serve --https-key ./path/to/server.key --https-cert ./path/to/server.crt --https-cacert ./path/to/ca.pem
 ```
 
-`webpack-dev-server >= v4.2.0` allows you to set additional [TSL options](https://nodejs.org/api/tls.html#tls_tls_createsecurecontext_options) like `minVersion`. Also, you can directly pass the contents of respective files:
+`webpack-dev-server >= v4.2.0` allows you to set additional [TLS options](https://nodejs.org/api/tls.html#tls_tls_createsecurecontext_options) like `minVersion`. Also, you can directly pass the contents of respective files:
 
 **webpack.config.js**