NIFI-7789: Small Correction in additionalDetials of ScriptedTransform…

…Record processor documentation

Signed-off-by: Matthew Burgess <mattyb149@apache.org>

This closes apache#4511

nifi-nar-bundles/nifi-scripting-bundle/nifi-scripting-processors/src/main/resources/docs/org.apache.nifi.processors.script.ScriptedTransformRecord/additionalDetails.html

@@ -110,7 +110,7 @@ <h3>Return Value</h3>
 </p>
 
 <p>
-    Note that the Python language does not a script to use a <code>return</code> outside of a method. Additionally, when interpreted as a script,
+    Note that the Python language does not allow a script to use a <code>return</code> outside of a method. Additionally, when interpreted as a script,
     the Java Python scripting engine does not provide a reliable way to easily obtain the last value referenced. As a result, any Python script must assign the value to be returned
     to the <code>_</code> variable. See examples below.
 </p>