add 7z wiki link (#543)

README.md

@@ -87,8 +87,6 @@ $ sudo apt-get install qt5dxcb-plugin
 - CB7, 7Z *(With `7z` executable)*
 - PDF *(Only extracting JPG images)*
 
-Add 7z to PATH via `setx path "%path%;C:\Program Files\7-Zip"`
-
 ## USAGE
 
 Should be pretty self-explanatory. All options have detailed information in tooltips.

kindlecomicconverter/KCC_gui.py

@@ -1045,7 +1045,7 @@ class KCCGUI(KCC_ui.Ui_mainWindow):
             self.sevenzip = True
         else:
             self.sevenzip = False
-            self.addMessage('Install <a href="https://www.7-zip.org/">7-Zip</a> and add 7z to PATH!'
+            self.addMessage('<a href="https://github.com/ciromattia/kcc/wiki/Installation#7-zip">Install 7z and add to PATH!</a>!'
                             ' CBZ/CBR/ZIP/etc processing disabled.', 'warning')
         self.detectKindleGen(True)