Changed property name based on feedback

Author: DamianEdwards

src/Microsoft.AspNet.Localization/RequestLocalizationMiddleware.cs

@@ -78,7 +78,7 @@ public async Task Invoke(HttpContext context)
                             cultureInfo = GetCultureInfo(
                                 cultures,
                                 _options.SupportedCultures,
-                                _options.FallbackToAncestorCulture,
+                                _options.FallBackToParentCultures,
                                 currentDepth: 0);
                         }
 
@@ -87,7 +87,7 @@ public async Task Invoke(HttpContext context)
                             uiCultureInfo = GetCultureInfo(
                                 uiCultures,
                                 _options.SupportedUICultures,
-                                _options.FallbackToAncestorUICulture,
+                                _options.FallBackToParentUICultures,
                                 currentDepth: 0);
                         }
 

src/Microsoft.AspNet.Localization/RequestLocalizationOptions.cs

@@ -61,7 +61,7 @@ public RequestCulture DefaultRequestCulture
         /// culture "fr-FR", and a configured <see cref="IRequestCultureProvider"/> determines a request's culture is
         /// "fr-FR", then the request's culture will be set to the culture "fr", as it is an ancestor of "fr-FR".
         /// </example>
-        public bool FallbackToAncestorCulture { get; set; } = true;
+        public bool FallBackToParentCultures { get; set; } = true;
 
         /// <summary>
         /// Gets or sets a value indicating whether to set a request UI culture to an ancestor culture in the case the
@@ -75,7 +75,7 @@ public RequestCulture DefaultRequestCulture
         /// culture is "fr-FR", then the request's UI culture will be set to the culture "fr", as it is an ancestor of
         /// "fr-FR".
         /// </example>
-        public bool FallbackToAncestorUICulture { get; set; } = true;
+        public bool FallBackToParentUICultures { get; set; } = true;
 
         /// <summary>
         /// The cultures supported by the application. The <see cref="RequestLocalizationMiddleware"/> will only set