docs: Fix typos in documentation (#12522)

Summary:
Opening braces should have closing braces.

Pull Request resolved: #12522

Reviewed By: amitkdutta

Differential Revision: D70561053

Pulled By: kevinwilfong

fbshipit-source-id: 0c49d8907dd76526cde613e3a996e99307bf7fa7

Author: jagill

velox/docs/develop/scalar-functions.rst

@@ -410,15 +410,15 @@ function defined above can be registered using the following function call:
 
 .. code-block:: c++
 
-  registerFunction<CeilFunction, double, double>({"ceil", "ceiling");
+  registerFunction<CeilFunction, double, double>({"ceil", "ceiling"});
 
 Here, we register the CeilFunction function that takes a double and returns a
 double. If we want to allow the ceil function to be called on float inputs,
 we need to call registerFunction again:
 
 .. code-block:: c++
 
-  registerFunction<CeilFunction, float, float>({"ceil", "ceiling");
+  registerFunction<CeilFunction, float, float>({"ceil", "ceiling"});
 
 We need to call registerFunction for each signature we want to support.