dpkg(1): Reword description for installed status

Prompted-by: #752123

debian/changelog

@@ -14,6 +14,7 @@ dpkg (1.17.20) UNRELEASED; urgency=low
     Closes: #759478
   * Inline alternative status description into translatable string in
     update-alternatives. Required-by: #766311
+  * Reword description for installed status in dpkg(1) man page.
 
   [ Updated programs translations ]
   * German (Sven Joachim).

man/dpkg.1

@@ -87,7 +87,7 @@ The package awaits trigger processing by another package.
 The package has been triggered.
 .TP
 .B installed
-The package is unpacked and configured OK.
+The package is correctly unpacked and configured.
 .SS Package selection states
 .TP
 .B install