Fix typo in messaging

Author: saquino0827

ERROR_MESSAGES.md

@@ -14,7 +14,7 @@ Any text in the following format `(Example)` are considered variables to be fill
 * 9 : CT - Aggregate count value must be an integer
 * 11 : CT - This PI Reference and Results is missing a required Measure Performed child
 * 12 : CT - This PI Measure Performed Reference and Results requires a single Measure ID
-* 13 : CT - Denominator count must be less than equal to Initial Population count for the measure population `(measure population id)`
+* 13 : CT - Denominator count must be less than or equal to Initial Population count for the measure population `(measure population id)`
 * 14 : CT - The electronic measure id: `(Current eMeasure ID)` requires `(Number of Subpopulations required)` `(Type of Subpopulation required)`(s) but there are `(Number of Subpopulations existing)`
 * 15 : CT - PI Numerator Denominator element should have a PI Section element as a parent
 * 16 : CT - PI Numerator Denominator element does not contain a measure name ID

commons/src/main/java/gov/cms/qpp/conversion/model/error/ProblemCode.java

@@ -39,7 +39,7 @@ public enum ProblemCode implements LocalizedProblem {
 		+ "Measure Performed child"),
 	PI_MEASURE_PERFORMED_RNR_MEASURE_ID_NOT_SINGULAR(12, "This PI Measure Performed Reference and Results requires "
 		+ "a single Measure ID"),
-	DENOMINATOR_COUNT_INVALID(13, "Denominator count must be less than equal to Initial Population count "
+	DENOMINATOR_COUNT_INVALID(13, "Denominator count must be less than or equal to Initial Population count "
 			+ "for the measure population `(measure population id)`", true),
 	POPULATION_CRITERIA_COUNT_INCORRECT(14,
 			"The electronic measure id: `(Current eMeasure ID)` requires `(Number of Subpopulations required)` "