Spelling fix

Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
diff --git a/tests/scripts/all.sh b/tests/scripts/all.sh
index 022e72f..229478e 100755
--- a/tests/scripts/all.sh
+++ b/tests/scripts/all.sh
@@ -214,7 +214,7 @@
     # defined in this script whose name starts with "component_".
     ALL_COMPONENTS=$(compgen -A function component_ | sed 's/component_//')
 
-    # Delay determinig SUPPORTED_COMPONENTS until the command line options have a chance to override
+    # Delay determining SUPPORTED_COMPONENTS until the command line options have a chance to override
     # the commands set by the environment
 }