CLDR-18017 Update site map ordering

Update site map to re-order the releases/downloads page and requesting changes page higher

See #4203

docs/site/sitemap.tsv

@@ -7,15 +7,7 @@
 #	If an item has 'sub items' it becomes a directory parent.		
 #	There must be a single 'index' entry here at the root.		
 index			
-	index/cldr-spec		
-		index/cldr-spec/core-data-for-new-locales	
-		index/cldr-spec/coverage-levels	
-		index/cldr-spec/collation-guidelines	
-		index/cldr-spec/picking-the-right-language-code	
-		index/cldr-spec/plural-rules	
-		index/cldr-spec/transliteration-guidelines	
-		index/cldr-spec/definitions	
-		index/bcp47-extension	
+	requesting_changes		
 	index/downloads		
 		downloads/cldr-47	
 		downloads/cldr-46	
@@ -38,9 +30,24 @@ index
 			downloads/cldr-33
 			downloads/cldr-32
 			downloads/cldr-31
-	index/draft-schedule		
-	requesting_changes		
+	index/cldr-spec		
+		index/cldr-spec/core-data-for-new-locales	
+		index/cldr-spec/coverage-levels	
+		index/cldr-spec/collation-guidelines	
+		index/cldr-spec/picking-the-right-language-code	
+		index/cldr-spec/plural-rules	
+		index/cldr-spec/transliteration-guidelines	
+		index/cldr-spec/definitions	
+		index/bcp47-extension	
 	index/charts		
+	general-information		
+		index/language-support-levels	
+		index/locale-coverage	
+		index/process	
+		index/process/cldr-data-retention-policy	
+		index/requesting-additionsupdates-to-cldr-languagepopulation-data	
+		covered-by-other-projects	
+	index/draft-schedule		
 	index/acknowledgments		
 	cldr-tc		
 		cldr-tc/design-wg	
@@ -49,15 +56,6 @@ index
 		cldr-tc/infrastructure-wg	
 		index/keyboard-workgroup	
 		ddl	
-	general-information		
-		index/language-support-levels	
-		index/locale-coverage	
-		index/process	
-		index/process/cldr-data-retention-policy	
-		index/requesting-additionsupdates-to-cldr-languagepopulation-data	
-		covered-by-other-projects	
-
-
 	translation		
 		translation/getting-started	
 			translation/getting-started/data-stability