J#27516: Fixed spelling

spec/02-authorsguide.adoc

@@ -523,7 +523,7 @@ For example:
 
 This example returns a list of tuples (structured values), one for each inpatient encounter performed, where each tuple consists of the [.id]#id# of the encounter as well as a [.id]#lengthOfStay# element, whose value is calculated by taking the duration of the period for the encounter. Tuples are discussed in detail in later sections. For more information on Tuples, see <<Structured Values (Tuples)>>.
 
-By default, a query returns list of distinct results, supressing duplicates. To include duplicates, use the [.kw]#all# keyword in the [.kw]#return# clause. For example, the following will return a list of the lengths of stay for each Encounter:
+By default, a query returns a list of distinct results, suppressing duplicates. To include duplicates, use the [.kw]#all# keyword in the [.kw]#return# clause. For example, the following will return a list of the lengths of stay for each Encounter:
 
 [source,cql]
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