fixed regex typo in README.md

README.md

@@ -4,7 +4,7 @@ Infernal Engine
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-The **Infernal Engine** is a 0+ order logic forward chaininginference 
+The **Infernal Engine** is a 0+ order logic forward chaining inference 
 engine. Rules are mapped to each fact that it contains so that when a
 fact is changed, each rule that uses that fact is added to the agenda for the 
 next inference iteration. The agenda maps the rule name to the rule function