typo fix

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/shell/ash_test/ash-vars/var_bash1a.tests b/shell/ash_test/ash-vars/var_bash1a.tests
index 551dd9a..c75c2dc 100755
--- a/shell/ash_test/ash-vars/var_bash1a.tests
+++ b/shell/ash_test/ash-vars/var_bash1a.tests
@@ -5,7 +5,7 @@
 echo "varoffset2    '${parameter:${offset}}'"
 echo "varoffset-2   '${parameter:${noffset}}'"
 echo "literal '2'   '${parameter:2}'"
-# This is not inrpreted as ${VAR:POS{:LEN}},
+# This is not interpreted as ${VAR:POS{:LEN}},
 # but as ${VAR:=WORD} - if VAR is unset or null, substitute WORD
 echo "literal '-2'  '${parameter:-2}'"
 echo "literal ' -2' '${parameter: -2}'"