[ATfL][release/23.x][docs] Adjust documentation links to match with the release branch

Author: pawosm-arm

arm-software/linux/docs/OpenMPSupport.md

@@ -2,12 +2,12 @@
 
 ## Clang OpenMP support
 
-See the [status page](https://clang.llvm.org/docs/OpenMPSupport.html)
+See the [status page](https://github.com/llvm/llvm-project/blob/release/23.x/clang/docs/OpenMPSupport.md)
 for the details on Clang OpenMP support.
 
 ## Flang OpenMP support
 
-See the [status page](https://flang.llvm.org/docs/OpenMPSupport.html)
+See the [status page](https://github.com/llvm/llvm-project/blob/release/23.x/flang/docs/OpenMPSupport.md)
 for the details on Flang OpenMP support. Note that ATfL does not support
 offloading.
 

arm-software/linux/docs/StandardsSupport.md

@@ -2,15 +2,15 @@
 
 ## C standard support
 
-See the [Clang C status page](https://clang.llvm.org/c_status.html) for
+See the [Clang C status page](https://github.com/llvm/llvm-project/blob/release/23.x/clang/www/c_status.html) for
 the details on C standard support.
 
 ## C++ standard support
 
-See the [Clang C++ status page](https://clang.llvm.org/cxx_status.html) for
+See the [Clang C++ status page](https://github.com/llvm/llvm-project/blob/release/23.x/clang/www/cxx_status.html) for
 the details on C++ standard support.
 
 ## Fortran Standards Support
 
-See the [Flang Fortran Standards Support page](https://flang.llvm.org/docs/FortranStandardsSupport.html)
+See the [Flang Fortran Standards Support page](https://github.com/llvm/llvm-project/blob/release/23.x/flang/docs/FortranStandardsSupport.md)
 for the details on Fortran standards support.