[installation] Fix instructions.md.

ba42e629 · Florent Lamiraux · Florent Lamiraux florent@laas.fr · 3b3c0968 · ba42e629
Commit ba42e629 authored Sep 10, 2020 by Florent Lamiraux Committed by Florent Lamiraux florent@laas.fr Sep 10, 2020
--- a/doc/instructions.md
+++ b/doc/instructions.md
@@ -25,7 +25,7 @@ To install all the packages on ubuntu 18.04 LTS 64 bit, you should do the follow
    - GUI:

      ```bash
-      sudo apt-get install robotpkg-py${pyver}-qt5-hpp-gui robotpkg-py${pyver}-qt5-hpp-manipulation
+      sudo apt-get install robotpkg-py${pyver}-qt5-hpp-gui robotpkg-py${pyver}-qt5-hpp-plot
      ```

    - Some robot descriptions: