chore: format runtime with stylua

runtime/lua/vim/F.lua

@@ -5,13 +5,17 @@ local F = {}
 ---@param a
 ---@param b
 function F.if_nil(a, b)
-  if a == nil then return b end
+  if a == nil then
+    return b
+  end
   return a
 end
 
 -- Use in combination with pcall
 function F.ok_or_nil(status, ...)
-  if not status then return end
+  if not status then
+    return
+  end
   return ...
 end
 
@@ -29,7 +33,7 @@ end
 
 --- like {...} except preserve the length explicitly
 function F.pack_len(...)
-  return {n=select('#', ...), ...}
+  return { n = select('#', ...), ... }
 end
 
 --- like unpack() but use the length set by F.pack_len if present