badwords: add more contractions, fix fallouts

Also fix hits in autotools scripts (not to enforce).

Closes #19576

tests/data/test1425

@@ -69,7 +69,7 @@ Content-Type: text/html
 Funny-head: yesyes
 
 </stdout>
-# 23 == CURLE_WRITE_ERROR, curl wouldn't accept the binary output
+# 23 == CURLE_WRITE_ERROR, curl would not accept the binary output
 <errorcode>
 23
 </errorcode>

tests/data/test1516

@@ -11,7 +11,7 @@ resolve
 
 <reply>
 # Close the connection after the first request but do not tell the client to do
-# so! When starting the second request it'll detect a dead connection and must
+# so! When starting the second request it detects a dead connection and must
 # not clean the DNS entries added manually.
 <data1>
 HTTP/1.1 200 OK

tests/data/test1566

@@ -29,7 +29,7 @@ Content-Type: text/html
 http
 </server>
 <name>
---etag-compare that gets a 304 back shouldn't overwrite the file
+--etag-compare that gets a 304 back should not overwrite the file
 </name>
 <command option="no-output,no-include">
 http://%HOSTIP:%HTTPPORT/%TESTNUMBER -o %LOGDIR/output%TESTNUMBER --etag-compare %LOGDIR/etag%TESTNUMBER

tests/data/test555

@@ -1,6 +1,6 @@
 <testcase>
 # NOTE: this test case is a duplicate of 547 but the tool is built to use the
-# multi interface instead of easy, but that shouldn't be noticeable at all in
+# multi interface instead of easy, but that should not be noticeable at all in
 # this file!
 <info>
 <keywords>