Correcting arguments type of size() function for consistency (#125)

* typo in the documentation section  "Operators" under case insensitive search heading

* As it was mentioned in argument section of size() function that its
list which is passed as an argument to this function but in syntax
section path was written as an argument for size function so to
maintain consistency this should be same in both sections.
diff --git a/docs/functions/scalar_functions.md b/docs/functions/scalar_functions.md
index ba829ef..4f02f94 100644
--- a/docs/functions/scalar_functions.md
+++ b/docs/functions/scalar_functions.md
@@ -614,7 +614,7 @@
 

 size() returns the length of a list.

 

-Syntax:`size(path)`

+Syntax:`size(list)`

 

 Returns: