Clarify what positron.r.saveAndRestoreWorkspace does right now (#11099)

Author: juliasilge

extensions/positron-r/package.nls.json

@@ -58,7 +58,7 @@
 	"r.configuration.packageTesting.description": "Explore and run testthat tests",
 	"r.configuration.restoreWorkspace.description": "Restore the workspace from .RData on startup (restart Positron to apply)",
 	"r.configuration.restoreWorkspace.deprecationMessage": "This setting is deprecated and will be removed. Please use 'positron.r.saveAndRestoreWorkspace' instead.",
-	"r.configuration.saveAndRestoreWorkspace.description": "Save the workspace to `.RData` on exit, and restore on startup (restart Positron to apply)",
+	"r.configuration.saveAndRestoreWorkspace.description": "When restarting R, save the workspace to `.RData` and restore (restart Positron to apply)",
 	"r.configuration.extraArguments.description": "Extra command-line arguments for R intialization",
 	"r.configuration.quietMode.description": "Run R in quiet mode, to suppress initial copyright and welcome messages (restart Positron to apply)",
 	"r.configuration.pipe": "String to insert as the pipe operator",