CLEANUP: assorted typo fixes in the code and comments

This is 13n iteration of typo fixes
diff --git a/reg-tests/ssl/ssl_simple_crt-list.vtc b/reg-tests/ssl/ssl_simple_crt-list.vtc
index 76605e3..d3353a1 100644
--- a/reg-tests/ssl/ssl_simple_crt-list.vtc
+++ b/reg-tests/ssl/ssl_simple_crt-list.vtc
@@ -1,6 +1,6 @@
 #REGTEST_TYPE=bug
 varnishtest "Test for the bug #940"
-# Test that the SNI are correcly inserted with the same file multiple times.
+# Test that the SNI are correctly inserted with the same file multiple times.
 
 #REQUIRE_VERSION=2.2
 #REQUIRE_OPTIONS=OPENSSL