[debian/changelog] correct two typos in the changelog for 0.7.22

debian/changelog

@@ -73,7 +73,7 @@ apt (0.7.22) unstable; urgency=low
       (off by default)
     - send "dpkg-exec" message on the status fd when dpkg is run
     - provide DPkg::Chroot-Directory config option (useful for testing)
-    - fix potential hang when in a backgroud process group
+    - fix potential hang when in a background process group
   * apt-pkg/algorithms.cc:
     - consider recommends when making the scores for the problem 
       resolver
@@ -102,7 +102,7 @@ apt (0.7.22) unstable; urgency=low
   * apt-pkg/deb/debsystem.cc:
     - make strings i18n able 
   * fix problematic use of tolower() when calculating the version 
-    hash by using locale independant tolower_ascii() function. 
+    hash by using locale independent tolower_ascii() function. 
     Thanks to M. Vefa Bicakci (LP: #80248)
   * build fixes for g++-4.4
   * cmdline/apt-mark: