runtime(misc): Use consistent "Vim script" spelling

References: https://groups.google.com/g/vim_dev/c/3Z5yM8KER2w/m/wAqws0QSEAAJ

closes: #15863

Signed-off-by: h-east <h.east.727@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/autoload/getscript.vim b/runtime/autoload/getscript.vim
index d5c1333..dced99c 100644
--- a/runtime/autoload/getscript.vim
+++ b/runtime/autoload/getscript.vim
@@ -365,7 +365,7 @@
 endfun
 
 " ---------------------------------------------------------------------
-"  GetOneScript: (Get Latest Vim Script) this function operates {{{1
+"  GetOneScript: (Get Latest Vim script) this function operates {{{1
 "    on the current line, interpreting two numbers and text as
 "    ScriptID, SourceID, and Filename.
 "    It downloads any scripts that have newer versions from vim.sourceforge.net.