[gcc r12-6394] [Ada] Fix typo in comment about unit families

[Pierre-Marie de Rodat]

https://gcc.gnu.org/g:d256274430c208ff4aeb4e59f297099027b3a29b

commit r12-6394-gd256274430c208ff4aeb4e59f297099027b3a29b
Author: Piotr Trojanek <trojanek@adacore.com>
Date:   Mon Dec 27 20:41:42 2021 +0100

    [Ada] Fix typo in comment about unit families
    
    gcc/ada/
    
            * sem_util.adb (Is_Child_Or_Sibling): Fix typo in comment.

Diff:
---
 gcc/ada/sem_util.adb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gcc/ada/sem_util.adb b/gcc/ada/sem_util.adb
index bf3d6c032c9..df0639971f4 100644
--- a/gcc/ada/sem_util.adb
+++ b/gcc/ada/sem_util.adb
@@ -16286,7 +16286,7 @@ package body Sem_Util is
          end if;
 
       --  The packages may come from the same package chain or from entirely
-      --  different hierarcies. To determine this, climb the scope stack until
+      --  different hierarchies. To determine this, climb the scope stack until
       --  a common root is found.
 
       --        (root)      (root 1)  (root 2)