patch 8.1.2082: some files have a weird name to fit in 8.3 characters

Problem:    Some files have a weird name to fit in 8.3 characters.
Solution:   Use a nicer names.
diff --git a/nsis/gvim.nsi b/nsis/gvim.nsi
index 8e6f6d0..ed53ab5 100644
--- a/nsis/gvim.nsi
+++ b/nsis/gvim.nsi
@@ -341,13 +341,13 @@
 	File ${VIMSRC}\vim${BIT}.dll
 !endif
 	File /oname=install.exe ${VIMSRC}\installw32.exe
-	File /oname=uninstal.exe ${VIMSRC}\uninstalw32.exe
+	File /oname=uninstall.exe ${VIMSRC}\uninstallw32.exe
 	File ${VIMSRC}\vimrun.exe
 	File /oname=tee.exe ${VIMSRC}\teew32.exe
 	File /oname=xxd.exe ${VIMSRC}\xxdw32.exe
 	File ..\vimtutor.bat
 	File ..\README.txt
-	File ..\uninstal.txt
+	File ..\uninstall.txt
 	File ${VIMRT}\*.vim
 	File ${VIMRT}\rgb.txt
 
@@ -955,7 +955,7 @@
 
 	# delete the context menu entry and batch files
 	DetailPrint "$(str_msg_unregistering)"
-	nsExec::Exec "$0\uninstal.exe -nsis"
+	nsExec::Exec "$0\uninstall.exe -nsis"
 	Pop $3
 
 	# We may have been put to the background when uninstall did something.