[SPARK-29189][FOLLOW-UP][SQL] Beautify config name

### What changes were proposed in this pull request?
Beautify comment

### Why are the changes needed?
The config name now is pretty weird.

### Does this PR introduce any user-facing change?
No

### How was this patch tested?
No test.

Closes apache#26054 from wangshisan/SPARK-29189.

Authored-by: gwang3 <[email protected]>
Signed-off-by: Dongjoon Hyun <[email protected]>

sql/catalyst/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala

@@ -833,7 +833,7 @@ object SQLConf {
       .createWithDefault(10000)
 
   val IGNORE_DATA_LOCALITY =
-    buildConf("spark.sql.sources.ignore.datalocality")
+    buildConf("spark.sql.sources.ignoreDataLocality.enabled")
       .doc("If true, Spark will not fetch the block locations for each file on " +
         "listing files. This speeds up file listing, but the scheduler cannot " +
         "schedule tasks to take advantage of data locality. It can be particularly " +