fix tls script path in documentation (#13089)

docs/development/build-instructions-linux.md

@@ -12,7 +12,7 @@ Follow the guidelines below for building Electron on Linux.
   For a quick test, run the following script:
 
   ```sh
-  $ python ./script/check-tls.py
+  $ python ./script/tls.py
   ```
 
   If the script returns that your configuration is using an outdated security

docs/development/build-instructions-osx.md

@@ -15,7 +15,7 @@ Please also ensure that your system and Python version support at least TLS 1.2.
 This depends on both your version of macOS and Python. For a quick test, run:
 
 ```sh
-$ python ./script/check-tls.py
+$ python ./script/tls.py
 ```
 
 If the script returns that your configuration is using an outdated security