fix spellcheck issues

Author: drwetter

.github/workflows/codespell.yml

@@ -13,4 +13,4 @@ jobs:
       - uses: codespell-project/actions-codespell@master
         with:
           skip: ca_hashes.txt,tls_data.txt,*.pem,OPENSSL-LICENSE.txt
-          ignore_words_list: borken,gost,ciph,ba,bloc,isnt,chello,fo,alle,anull
+          ignore_words_list: borken,gost,ciph,ba,bloc,isnt,chello,fo,alle,anull,Widgits,Manuel

testssl.sh

@@ -17814,7 +17814,7 @@ run_tls_fallback_scsv() {
                pr_svrty_good "Probably OK. "
                fileout "$jsonID" "OK" "Probably oK"
                # see RFC 7507, https://github.com/drwetter/testssl.sh/issues/121
-               # other case reported by Nicolas was F5 and at costumer of mine: the same
+               # other case reported by Nicolas was F5 and at customer of mine: the same
                pr_svrty_medium "But received non-RFC-compliant \"handshake failure\" instead of \"inappropriate fallback\""
                fileout "$jsonID" "MEDIUM" "received non-RFC-compliant \"handshake failure\" instead of \"inappropriate fallback\""
           elif grep -qa "ssl handshake failure" "$TMPFILE"; then