Possessive "it's" → "its" in .nsi files.

contrib/polipo/polipo-mingw.nsi

@@ -165,7 +165,7 @@ SectionEnd
 !insertmacro MUI_FUNCTION_DESCRIPTION_BEGIN
   !insertmacro MUI_DESCRIPTION_TEXT ${Polipo} "The core executable and config files needed for Polipo to run."
   !insertmacro MUI_DESCRIPTION_TEXT ${ShortCuts} "Shortcuts to easily start Polipo"
-  !insertmacro MUI_DESCRIPTION_TEXT ${StartMenu} "Shortcuts to access Polipo and it's documentation from the Start Menu"
+  !insertmacro MUI_DESCRIPTION_TEXT ${StartMenu} "Shortcuts to access Polipo and its documentation from the Start Menu"
   !insertmacro MUI_DESCRIPTION_TEXT ${Desktop} "A shortcut to start Polipo from the desktop"
   !insertmacro MUI_DESCRIPTION_TEXT ${Startup} "Launches Polipo automatically at startup in a minimized window"
 !insertmacro MUI_FUNCTION_DESCRIPTION_END

contrib/tor-mingw.nsi.in

@@ -147,7 +147,7 @@ SectionEnd
 !insertmacro MUI_DESCRIPTION_TEXT ${Tor} "The core executable and config files needed for Tor to run."
 !insertmacro MUI_DESCRIPTION_TEXT ${Docs} "Documentation about Tor."
 !insertmacro MUI_DESCRIPTION_TEXT ${ShortCuts} "Shortcuts to easily start Tor"
-!insertmacro MUI_DESCRIPTION_TEXT ${StartMenu} "Shortcuts to access Tor and it's documentation from the Start Menu"
+!insertmacro MUI_DESCRIPTION_TEXT ${StartMenu} "Shortcuts to access Tor and its documentation from the Start Menu"
 !insertmacro MUI_DESCRIPTION_TEXT ${Desktop} "A shortcut to start Tor from the desktop"
 !insertmacro MUI_DESCRIPTION_TEXT ${Startup} "Launches Tor automatically at startup in a minimized window"
 !insertmacro MUI_FUNCTION_DESCRIPTION_END

contrib/tor.nsi.in

@@ -207,7 +207,7 @@ SectionEnd
   !insertmacro MUI_DESCRIPTION_TEXT ${OpenSSL} "OpenSSL libraries required by Tor."
   !insertmacro MUI_DESCRIPTION_TEXT ${Docs} "Documentation about Tor."
   !insertmacro MUI_DESCRIPTION_TEXT ${ShortCuts} "Shortcuts to easily start Tor"
-  !insertmacro MUI_DESCRIPTION_TEXT ${StartMenu} "Shortcuts to access Tor and it's documentation from the Start Menu"
+  !insertmacro MUI_DESCRIPTION_TEXT ${StartMenu} "Shortcuts to access Tor and its documentation from the Start Menu"
   !insertmacro MUI_DESCRIPTION_TEXT ${Desktop} "A shortcut to start Tor from the desktop"
   !insertmacro MUI_DESCRIPTION_TEXT ${Startup} "Launches Tor automatically at startup in a minimized window"
 !insertmacro MUI_FUNCTION_DESCRIPTION_END