doc(README): update description of compiler tests

Author: rouson

README.md

@@ -60,9 +60,9 @@ Compiler Status
 ---------------
 Correct execution of the Reference Counter library code requires comprehensive
 compiler support for Fortran's type finalization semantics.  The unit test suite
-includes language standard-conformance tests that verify correct compiler behavior
-across a few common use cases.  The table below summarizes the observes compiler
-behaviors:
+includes compiler standard-conformance tests.  We have attempted to include at least
+one example of each scenario in which the Fortran 2018 standard requires compilers
+to finalize objects.  The table below summarizes the observed compiler behaviors:
 
 | _Compiler_   | _Test failures_      | _Version tested_                                    |
 | :---         |       :---:          | :---                                                |
@@ -72,10 +72,6 @@ behaviors:
 | NVIDIA       | Fails to build (ICE) | `nvfortran` 2022.2                                  |
 | AMD          | Fails to build (ICE) | `flang` 13.0.0 (AOCC_3.2.0-Build\#128 2021\_11\_12) |
 
-The current compiler tests are based on early user feedback and are therefore 
-_ad hoc_ with no attempt at being exhaustive.  Please submit an issue if you
-encounter unexpected behavior in a use case not covered in the test suite or
-you can provide test results for additional compilers.
 
 Downloading, Building, and Testing
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