tidy-up: miscellaneous

- `N byte` -> `N-byte` or `N bytes`.
- INTERNALS.md: language tweaks.
- schannel: language tweak in comment/error message.
- socks_gssapi, socks_sspi: simplify composing an error message.
  (at a cost of 8 extra constant string bytes.)
- m4/curl-compilers.m4: fix typo in link (in comment).
- contrithanks.sh: fix indent, drop stray `;` terminator.
- lib, src, tests: drop/fix a bunch of badwords.
- fix typos in comments.
- fix indent, stray spaces.

Some of these spotted by GitHub Code Quality and Copilot

Closes #22009

scripts/badwords.txt

@@ -112,6 +112,7 @@ will:rewrite to present tense
 32-bits:32 bits
 64-bits:64 bits
 initialise:initialize
+initialising:initializing
 very:rephrase using an alternative word
 just:rephrase using an alternative word
 simply:rephrase using an alternative word
@@ -131,3 +132,4 @@ with with:with
 ---Curl Corporation
 ---:lib/:will
 ---:src/:will
+---:tests/data/:file name

scripts/contrithanks.sh

@@ -36,11 +36,11 @@ if test "$start" = "-h"; then
   exit
 fi
 if test "$start" = "stdout"; then
-    # output the names on stdout
-    use_stdout="yes"
-    start=""
+  # output the names on stdout
+  use_stdout="yes"
+  start=""
 else
-    use_stdout="no";
+  use_stdout="no"
 fi
 if test -z "$start"; then
   start=$(git tag --sort=taggerdate | grep "^curl-" | tail -1)

scripts/top-complexity

@@ -96,7 +96,7 @@ my $alllines = 0;
 # 142     417     809     1677    1305    src/tool_getparam.c(1677): getparameter
 for my $l (@output) {
     chomp $l;
-    if($l =~/^(\d+)\t\d+\t\d+\t\d+\t(\d+)\t([^\(]+).*: ([^ ]*)/) {
+    if($l =~ /^(\d+)\t\d+\t\d+\t\d+\t(\d+)\t([^\(]+).*: ([^ ]*)/) {
         my ($score, $len, $path, $func) = ($1, $2, $3, $4);
 
         my $allow = 0;

scripts/top-length

@@ -96,7 +96,7 @@ my $alllines = 0;
 # 142     417     809     1677    1305    src/tool_getparam.c(1677): getparameter
 for my $l (@output) {
     chomp $l;
-    if($l =~/^(\d+)\t\d+\t\d+\t\d+\t(\d+)\t([^\(]+).*: ([^ ]*)/) {
+    if($l =~ /^(\d+)\t\d+\t\d+\t\d+\t(\d+)\t([^\(]+).*: ([^ ]*)/) {
         my ($score, $length, $path, $func) = ($1, $2, $3, $4);
 
         my $allow = 0;