gnu: gdbm, nano: Synchronize synopses.

* gnu/packages/gdbm.scm, gnu/packages/nano.scm: Synchronize synopses
  with the Womb.

gnu/packages/gdbm.scm

@@ -37,7 +37,8 @@
     (arguments `(#:configure-flags '("--enable-libgdbm-compat")))
     (build-system gnu-build-system)
     (home-page "http://www.gnu.org/software/gdbm/")
-    (synopsis "GNU dbm key/value database library")
+    (synopsis
+     "Hash library of database functions compatible with traditional dbm")
     (description
      "GNU dbm (or GDBM, for short) is a library of database functions
 that use extensible hashing and work similar to the standard UNIX dbm.

gnu/packages/nano.scm

@@ -42,7 +42,7 @@
      `(("gettext" ,guix:gettext)
        ("ncurses" ,ncurses)))
     (home-page "http://www.nano-editor.org/")
-    (synopsis "A small, user-friendly console text editor")
+    (synopsis "Small, user-friendly console text editor")
     (description
      "GNU nano is designed to be a free replacement for the Pico text
 editor, part of the Pine email suite from The University of