README.md: Update prerequisites for Ubuntu

Author: kolerov

README.md

@@ -69,7 +69,7 @@ website](http://gcc.gnu.org/install/prerequisites.html)
 ```shell
 sudo apt update
 sudo apt install -y autoconf help2man libtool libtool-bin texinfo byacc flex libncurses5-dev zlib1g-dev \
-                    libexpat1-dev texlive build-essential git wget gawk \
+                    libexpat1-dev texlive build-essential git wget gawk libncursesw5 \
                     bison xz-utils make python3 rsync locales
 ```