[flang][docs] Fix a couple of warnings

Author: DavidSpickett

flang/docs/FortranLLVMTestSuite.md

@@ -62,7 +62,7 @@ cmake -G "Ninja" -DCMAKE_C_COMPILER=gcc -DCMAKE_CXX_COMPILER=g++ \
 
 Tests from the gfortran test suite have been imported into the LLVM Test Suite.
 The tests will be run automatically if the test suite is built following the
-instructions described [above](#running-the-LLVM-test-suite-with-fortran).
+instructions described [above](#running-the-llvm-test-suite-with-fortran).
 There are additional configure-time options that can be used with the gfortran 
 tests. More details about those options and their purpose can be found in 
 [`Fortran/gfortran/README.md`](https://github.com/llvm/llvm-test-suite/tree/main/Fortran/gfortran/README.md)`.

flang/docs/index.md

@@ -68,6 +68,7 @@ on how to get in touch with us and to learn more about the current status.
    OpenACC
    OpenACC-descriptor-management.md
    OpenMP-4.5-grammar.md
+   OpenMP-descriptor-management
    OpenMP-semantics
    OptionComparison
    Overview