[llvm-cov] Fix the test of bnary-id-lookup.c after the commit cd8fe1d.

Author: MaggieYingYi

compiler-rt/test/profile/Linux/binary-id-lookup.c

@@ -29,8 +29,8 @@
 // CHECK: 3| 1|int main() {
 
 // FOO-ONLY: 1| 1|void foo(void) {}
-// MISSING-BINARY-ID: error: Failed to load coverage: '[[FILENAME]]': Missing binary ID: abcd1234
-// NODATA: error: Failed to load coverage: '': No coverage data found
+// MISSING-BINARY-ID: error: failed to load coverage: '[[FILENAME]]': Missing binary ID: abcd1234
+// NODATA: error: failed to load coverage: '': no coverage data found
 
 //--- foo.c
 void foo(void) {}