Typo

Author: DivineOmega

README.md

@@ -35,7 +35,7 @@ $portmanteaus = $word->portmanteaus();
 $numberOfSyllables = $word->syllables();    // Returns an integer
 $isOffensive = $word->offensive();          // Returns true/false
 $plural = $word->plural();                  // Returns `Word` object
-$singular = $word->singular;                // Returns `Word` object
+$singular = $word->singular();              // Returns `Word` object
 ```
 
 Most methods will return an array of `Word` objects, unless specified otherwise.