PORTABLE_SERVICES.md: Improve grammar

diff --git a/docs/PORTABLE_SERVICES.md b/docs/PORTABLE_SERVICES.md
index 6f5ff112d25e523c287e3f8b2a749be6239fbde5..5055d77c544c5a55da0582d77e34a62691c805a8 100644 (file)
--- a/docs/PORTABLE_SERVICES.md
+++ b/docs/PORTABLE_SERVICES.md
@@ -70,8 +70,8 @@ under Docker), but as normal processes. A corollary of that is that they aren't
 supposed to manage anything in their own environment (such as the network) as
 the execution environment is mostly shared with the rest of the system.
 
-The primary focus use-case of "portable services" is to extend the host system
-with encapsulated extensions, but provide almost full integration with the rest
+The primary focus of "portable services" is to extend the host system
+with encapsulated extensions that provide almost full integration with the rest
 of the system, though possibly restricted by security knobs. This focus
 includes system extensions otherwise sometimes called "super-privileged
 containers".