Fix documentation in code.py (GH-17988)

Author: Kyle Pollina

Doc/library/code.rst

@@ -76,7 +76,7 @@ Interactive Interpreter Objects
 
    Compile and run some source in the interpreter. Arguments are the same as for
    :func:`compile_command`; the default for *filename* is ``'<input>'``, and for
-   *symbol* is ``'single'``.  One several things can happen:
+   *symbol* is ``'single'``.  One of several things can happen:
 
    * The input is incorrect; :func:`compile_command` raised an exception
      (:exc:`SyntaxError` or :exc:`OverflowError`).  A syntax traceback will be

Lib/code.py

@@ -40,7 +40,7 @@ def runsource(self, source, filename="<input>", symbol="single"):
 
         Arguments are as for compile_command().
 
-        One several things can happen:
+        One of several things can happen:
 
         1) The input is incorrect; compile_command() raised an
         exception (SyntaxError or OverflowError).  A syntax traceback