Feature/sangshuduo/td 5136 taosdemo rework (#6911)

* [TD-5136]<feature>: taosdemo simulate real senario.

* update test case according to taosdemo change

* adjust range of semi-random data.

* make demo mode use different tag name and value.

* change malloc to calloc for pid allocation.

* fix typo.
Co-authored-by: NShuduo Sang <sdsang@taosdata.com>

src/kit/taosdemo/taosdemo.c

@@ -2815,7 +2815,7 @@ static int createSuperTable(
         if (strcasecmp(dataType, "BINARY") == 0) {
             if ((g_args.demo_mode) && (tagIndex == 1)) {
                 len += snprintf(tags + len, STRING_LEN - len,
-                        "loction BINARY(%d), ",
+                        "location BINARY(%d), ",
                         superTbl->tags[tagIndex].dataLen);
             } else {
                 len += snprintf(tags + len, STRING_LEN - len, "t%d %s(%d), ",