Fix more typos in new text docs (elastic#127855)

Author: lkts

docs/reference/elasticsearch/mapping-reference/keyword.md

@@ -264,7 +264,7 @@ Will become:
 
 ```console-result
 {
-  "kwd": ["bar", "foo", "NA"]
+  "kwd": ["NA", "bar", "foo"]
 }
 ```
 

docs/reference/elasticsearch/mapping-reference/text.md

@@ -158,8 +158,8 @@ Will become:
 ```console-result
 {
   "text": [
-    "jumped over the lazy dog",
     "NA",
+    "jumped over the lazy dog",
     "the quick brown fox"
   ]
 }