Fix Fuzziness on QueryStringQuery (#2121)

See #2114

Author: russcam

src/Nest/QueryDsl/FullText/QueryString/QueryStringQuery.cs

@@ -35,7 +35,7 @@ public interface IQueryStringQuery : IQuery
 		[JsonProperty(PropertyName = "fuzzy_max_expansions")]
 		int? FuzzyMaxExpansions { get; set; }
 
-		[JsonProperty(PropertyName = "fuziness")]
+		[JsonProperty(PropertyName = "fuzziness")]
 		Fuzziness Fuzziness { get; set; }
 
 		[JsonProperty(PropertyName = "fuzzy_prefix_length")]
@@ -186,8 +186,11 @@ public QueryStringQueryDescriptor<T> LowercaseExpendedTerms(bool? lowercaseExpen
 		public QueryStringQueryDescriptor<T> EnablePositionIncrements(bool? enablePositionIncrements = true) =>
 			Assign(a => a.EnablePositionIncrements = enablePositionIncrements);
 
+		[Obsolete("Use Fuzziness(Fuzziness fuzziness)")]
 		public QueryStringQueryDescriptor<T> Fuziness(Fuzziness fuzziness) => Assign(a => a.Fuzziness = fuzziness);
 
+		public QueryStringQueryDescriptor<T> Fuzziness(Fuzziness fuzziness) => Assign(a => a.Fuzziness = fuzziness);
+
 		public QueryStringQueryDescriptor<T> FuzzyPrefixLength(int? fuzzyPrefixLength) => Assign(a => a.FuzzyPrefixLength = fuzzyPrefixLength);
 
 		public QueryStringQueryDescriptor<T> FuzzyMaxExpansions(int? fuzzyMaxExpansions) => Assign(a => a.FuzzyMaxExpansions = fuzzyMaxExpansions);

src/Tests/QueryDsl/FullText/QueryString/QueryStringUsageTests.cs

@@ -24,7 +24,7 @@ public QueryStringUsageTests(ReadOnlyCluster i, EndpointUsage usage) : base(i, u
 				lowercase_expanded_terms = true,
 				enable_position_increments = true,
 				fuzzy_max_expansions = 3,
-				fuziness = "AUTO",
+				fuzziness = "AUTO",
 				fuzzy_prefix_length = 2,
 				analyze_wildcard = true,
 				auto_generate_phrase_queries = true,
@@ -95,7 +95,7 @@ protected override QueryContainer QueryFluent(QueryContainerDescriptor<Project>
 				.FuzzyMaxExpansions(3)
 				.FuzzyRewrite(RewriteMultiTerm.ConstantScore)
 				.Rewrite(RewriteMultiTerm.ConstantScore)
-				.Fuziness(Fuzziness.Auto)
+				.Fuzziness(Fuzziness.Auto)
 				.TieBreaker(1.2)
 				.AnalyzeWildcard()
 				.MinimumShouldMatch(2)