Description: Improve message about PyQt5.
From: Tristan Seligmann <mithrandi@debian.org>
Last-Update: 2022-09-30

--- a/electrum/gui/qt/__init__.py
+++ b/electrum/gui/qt/__init__.py
@@ -37,8 +37,7 @@
     import PyQt5.QtGui
 except Exception as e:
     raise GuiImportError(
-        "Error: Could not import PyQt5 on Linux systems, "
-        "you may try 'sudo apt-get install python3-pyqt5'") from e
+        "Error: Could not import PyQt5; try 'sudo apt install python3-pyqt5'") from e
 
 from PyQt5.QtGui import QGuiApplication
 from PyQt5.QtWidgets import (QApplication, QSystemTrayIcon, QWidget, QMenu,