debian: Fix typo and clarify text in 1.17.0 changelog entry

debian/changelog

@@ -116,8 +116,8 @@ dpkg (1.17.0) unstable; urgency=low
   * Print correct path to vendor directory on error message in dpkg-vendor.
   * Do not hardcode the dpkg system configuration directory in perl scripts,
     respect build time setting.
-  * Deprecate Dpkg lowercase and exported by default variables, replaced by
-    new unified uppercase non-exported by default ones.
+  * Deprecate Dpkg perl module lowercase and exported by default variables,
+    replaced by new unified uppercase non-exported by default ones.
   * Do not set -fstack-protector in the default build flags on arm64 (it's
     not yet supported). Thanks to Matthias Klose <doko@ubuntu.com>.
     Closes: #711936
@@ -163,7 +163,7 @@ dpkg (1.17.0) unstable; urgency=low
   * Add new dpkg-shlibdeps -l option to add private shared library directories.
     This should be used instead of abusing LD_LIBRARY_PATH to pass the paths,
     which might be problematic when cross-compiling. Closes: #698881
-  * Only apply empy line and comma cleanups when doing substvar replacements
+  * Only apply empty line and comma cleanups when doing substvar replacements
     on fields where those are relevant. Closes: #659814
   * Do not scan control files twice for PGP signature presence.