Update doc/cprover-manual/requires-and-ensures-clauses.md

Co-authored-by: Saswat Padhi <[email protected]>

Author: feliperodri

doc/cprover-manual/requires-and-ensures-clauses.md

@@ -61,7 +61,7 @@ __CPROVER_ensures((__CPROVER_return_value == SUCCESS) ==> (*out == (*a + *b)))
 In order to determine whether _requires_ and _ensures_ clauses are a sound
 characterization of the behavior of a function *f*, CBMC will try to check them as follows:
 
-1. Considers all arguments and global variables as non-determinisc values;
+1. Considers all arguments and global variables as non-deterministic values;
 2. Assumes all preconditions specified in the `__CPROVER_requires` clauses;
 4. Calls the implementation of function *f*;
 5. Asserts all postconditions described in the `__CPROVER_ensures` clauses.