Update tests missed during the initial round to markdown

groups/bal/ball/ball_log.t.cpp

@@ -2968,7 +2968,7 @@ if (verbose) bsl::cout << "Example 1: A Basic Logging Example" << bsl::endl;
 
     BALL_LOG_TRACE << "Write this message to the log if the log threshold "
                    << "is above 'ball::Severity::e_TRACE' (i.e., 192).";
-//..
+// ```
 // Next, we demonstrate how to use proprietary code within logging macros.
 // Suppose you want to add the content of a vector to the log trace:
 // ```

groups/bdl/bdlb/bdlb_doublecompareutil.t.cpp

@@ -125,7 +125,7 @@ int main(int argc, char *argv[])
         //
         // Plan:
         //   Incorporate usage example from header into driver, remove leading
-        //   comment characters, and replace 'assert' with 'ASSERT'.
+        //   comment characters, and replace `assert` with `ASSERT`.
         //
         // Testing:
         //   USAGE EXAMPLE
@@ -552,10 +552,10 @@ int main(int argc, char *argv[])
         //
         // Plan:
         //   Incorporate the tabular example from header as a conventional set
-        //   of table-generated test vectors and 'ASSERT' the expected results.
+        //   of table-generated test vectors and `ASSERT` the expected results.
         //
         // Testing:
-        //   The numerical example from 'bdlb_DoubleCompareUtil.h'.
+        //   The numerical example from `bdlb_DoubleCompareUtil.h`.
         // --------------------------------------------------------------------
 
         if (verbose) cout << "\nTESTING TABULAR EXAMPLE"