Typo in NEW and curs_inch.3x: improvment

[Sven Joachim]

Our lintian tool has detected a spelling mistake in curs_inch.3x, and
there are also two occurrences of it in the NEWS file.  Attached is a
patch with a few improvements. ;-)

Cheers,
       Sven

diff --git a/NEWS b/NEWS
index b023262d..80ed4b55 100644
--- a/NEWS
+++ b/NEWS
@@ -2742,7 +2742,7 @@ it is not possible to add this information.
        + regenerated html manpages.
 
 20120107
-       + various improvments for MinGW (Juergen Pfeifer):
+       + various improvements for MinGW (Juergen Pfeifer):
          + modify stat() calls to ignore the st_size member
          + drop mk-dlls.sh script.
          + change recommended regular expression library.
@@ -5193,7 +5193,7 @@ it is not possible to add this information.
        + fix ifdef in c++/internal.h for QNX 6.1
        + test-compiled with (old) egcs-1.1.2, modified configure script to
          not unset the $CXX and related variables which would prevent this.
-       + fix a few terminfo.src typos exposed by improvments to "-f" option.
+       + fix a few terminfo.src typos exposed by improvements to "-f" option.
        + improve infocmp/tic "-f" option formatting.
 
 20060923
diff --git a/man/curs_inch.3x b/man/curs_inch.3x
index 4fe29e43..38f56e9e 100644
--- a/man/curs_inch.3x
+++ b/man/curs_inch.3x
@@ -89,7 +89,7 @@ with the \fIstandout\fP attribute removed.
 System V curses added support for several video attributes which
 could be combined with characters in the window.
 .IP
-Reflecting this improvment, the function was altered to return the
+Reflecting this improvement, the function was altered to return the
 character combined with all video attributes in a \fBchtype\fP value.
 .PP
 X/Open Curses does not specify