Updated Runtime Environments (markdown)

Runtime-Environments.md

@@ -1,6 +1,6 @@
 # Runtime Environments
 
-This page contains notes about using various runtime environments in ReCodEx as well as their internal usage inside Isolate sandbox. Only special cases are noted here.
+This page contains notes about using various runtime environments in ReCodEx as well as their internal usage inside [isolate](https://github.com/ioi/isolate) sandbox. Only special cases are noted here.
 
 ## Python
 
@@ -23,4 +23,4 @@ In C# language there are none of the handy functions to operate with textual inp
 
 ## Go
 
-The solutions of Go has to be located only in one package, the standard `main` executable package. ReCodEx uses flat folder structure of submitted solution, therefore separate Go packages cannot be used. Multiple files are fine as long as they contains the same package.
+The solutions of Go has to be located only in one package, the standard `main` executable package. ReCodEx uses flat folder structure of submitted solution, therefore separate Go packages cannot be used. Multiple files are fine as long as they contain the same package.