Fix lowercase comment start

Signed-off-by: David Horstmann <david.horstmann@arm.com>
diff --git a/tests/scripts/all.sh b/tests/scripts/all.sh
index 2322a98..ddabe12 100755
--- a/tests/scripts/all.sh
+++ b/tests/scripts/all.sh
@@ -5176,7 +5176,7 @@
 }
 
 component_test_cmake_out_of_source () {
-    # remove existing generated files so that we use the ones cmake
+    # Remove existing generated files so that we use the ones cmake
     # generates
     make neat