fix: select _block_dist() from t; set the unit of Size to KB

docs/en/12-taos-sql/06-select.md

@@ -229,7 +229,7 @@ SELECT _block_dist() FROM { tb_name | stb_name }
 
 ```text title="Result"
 summary:
-5th=[392], 10th=[392], 20th=[392], 30th=[392], 40th=[792], 50th=[792] 60th=[792], 70th=[792], 80th=[792], 90th=[792], 95th=[792], 99th=[792] Min=[392(Rows)] Max=[800(Rows)] Avg=[666(Rows)] Stddev=[2.17] Rows=[2000], Blocks=[3], Size=[5.440(Kb)] Comp=[0.23] RowsInMem=[0] SeekHeaderTime=[1(us)]
+5th=[392], 10th=[392], 20th=[392], 30th=[392], 40th=[792], 50th=[792] 60th=[792], 70th=[792], 80th=[792], 90th=[792], 95th=[792], 99th=[792] Min=[392(Rows)] Max=[800(Rows)] Avg=[666(Rows)] Stddev=[2.17] Rows=[2000], Blocks=[3], Size=[5.440(KB)] Comp=[0.23] RowsInMem=[0] SeekHeaderTime=[1(us)]
 ```
 
 **More explanation about above example**:
@@ -241,7 +241,7 @@ summary:
 - stddev of number of rows, i.e. Stddev=[2.17]
 - Total number of rows, i.e. Rows[2000]
 - Total number of data blocks, i.e. Blocks=[3]
-- Total disk size consumed, i.e. Size=[5.440(Kb)]
+- Total disk size consumed, i.e. Size=[5.440(KB)]
 - Compression ratio, which means the compressed size divided by original size, i.e. Comp=[0.23]
 - Total number of rows in memory, i.e. RowsInMem=[0], which means no rows in memory
 - The time spent on reading head file (to retrieve data block information), i.e. SeekHeaderTime=[1(us)], which means 1 microsecond.

docs/zh/12-taos-sql/06-select.md

@@ -240,7 +240,7 @@ SELECT _block_dist() FROM { tb_name | stb_name }
 
 ```txt title="返回结果"
 summary:
-5th=[392], 10th=[392], 20th=[392], 30th=[392], 40th=[792], 50th=[792] 60th=[792], 70th=[792], 80th=[792], 90th=[792], 95th=[792], 99th=[792] Min=[392(Rows)] Max=[800(Rows)] Avg=[666(Rows)] Stddev=[2.17] Rows=[2000], Blocks=[3], Size=[5.440(Kb)] Comp=[0.23] RowsInMem=[0] SeekHeaderTime=[1(us)]
+5th=[392], 10th=[392], 20th=[392], 30th=[392], 40th=[792], 50th=[792] 60th=[792], 70th=[792], 80th=[792], 90th=[792], 95th=[792], 99th=[792] Min=[392(Rows)] Max=[800(Rows)] Avg=[666(Rows)] Stddev=[2.17] Rows=[2000], Blocks=[3], Size=[5.440(KB)] Comp=[0.23] RowsInMem=[0] SeekHeaderTime=[1(us)]
 ```
 
 **上述信息的说明如下**:
@@ -252,7 +252,7 @@ summary:
 - 所有数据块中行数分布的均方差为 2.17 ( stddev ）。
 - 数据块包含的行的总数为 2000 行（Rows）。
 - 数据块总数是 3 个数据块 （Blocks）。
-- 数据块占用磁盘空间大小 5.44 Kb （size）。
+- 数据块占用磁盘空间大小 5.44 KB （size）。
 - 压缩后的数据块的大小除以原始数据的所获得的压缩比例： 23%（Comp），及压缩后的数据规模是原始数据规模的 23%。
 - 内存中存在的数据行数是 0，表示内存中没有数据缓存。
 - 获取数据块信息的过程中读取头文件的时间开销 1 微秒（SeekHeaderTime）。

src/query/src/qAggMain.c

@@ -5108,7 +5108,7 @@ void generateBlockDistResult(STableBlockDist *pTableBlockDist, char* result) {
                    "5th=[%d], 10th=[%d], 20th=[%d], 30th=[%d], 40th=[%d], 50th=[%d]\n\t "
                    "60th=[%d], 70th=[%d], 80th=[%d], 90th=[%d], 95th=[%d], 99th=[%d]\n\t "
                    "Min=[%"PRId64"(Rows)] Max=[%"PRId64"(Rows)] Avg=[%"PRId64"(Rows)] Stddev=[%.2f] \n\t "
-                   "Rows=[%"PRIu64"], Blocks=[%"PRId64"], SmallBlocks=[%d], Size=[%.3f(Kb)] Comp=[%.5g]\n\t "
+                   "Rows=[%"PRIu64"], Blocks=[%"PRId64"], SmallBlocks=[%d], Size=[%.3f(KB)] Comp=[%.5g]\n\t "
                    "RowsInMem=[%d] \n\t",
                    percentiles[0], percentiles[1], percentiles[2], percentiles[3], percentiles[4], percentiles[5],
                    percentiles[6], percentiles[7], percentiles[8], percentiles[9], percentiles[10], percentiles[11],