docs: fix typo in basic usage

docs/docs/basic-usage.md

@@ -106,7 +106,7 @@ To deactivate the virtual environment without leaving the shell use `deactivate`
 	that an activated virtual environment remains active after the Poetry command
 	that an activated virtual environment remains active after the Poetry command
 	has completed execution.
 	has completed execution.
 
 
-	Therefore, Poetry has to create a sub-shell with the virtual envrionment activated
+	Therefore, Poetry has to create a sub-shell with the virtual environment activated
 	in order for the subsequent commands to run from within the virtual environment.
 	in order for the subsequent commands to run from within the virtual environment.