[ClangScanDeps/cas] Update test after upstream change

Update checking for test output after llvm#77120.

(cherry picked from commit ccb1e72)

Author: akyrtzi

clang/test/ClangScanDeps/modules-include-tree-implementation-private.c

@@ -29,7 +29,7 @@
 // CHECK: Mod (framework)
 // CHECK:   link Mod (framework)
 // CHECK: Mod_Private (framework)
-// CHECK:   link Mod_Private (framework)
+// CHECK:   link Mod (framework)
 
 // CHECK: Files:
 // CHECK: [[PREFIX]]/tu.m llvmcas://