tidy-up: miscellaneous (cont.)

- examples: replace magic numbers with `sizeof()`.
- typos: drop rules no longer needed after excluding tests/data.
- typos: move an exception inline.
- alpha-sort lists.
- fix indentation, whitespace.

Closes #18898

.github/scripts/typos.toml

@@ -9,13 +9,10 @@ extend-ignore-identifiers-re = [
   "^(ECT0|ECT1|HELO|htpt|PASE)$",
   "^[A-Za-z0-9_-]*(EDE|GOST)[A-Z0-9_-]*$",  # ciphers
   "^0x[0-9a-fA-F]+FUL$",  # unsigned long hex literals ending with 'F'
-  "^[0-9a-zA-Z+]{64,}$",  # possibly base64
-  "^(Januar|eyeballers|HELO_smtp|kno22|MkTypLibCompatible|optin|passin|perfec|__SecURE|SMTP_HELO|v_alue)$",
-  "^(clen|req_clen|smtp_perform_helo|smtp_state_helo_resp|_stati64)$",
-  "^Tru64$",
+  "^(eyeballers|HELO_smtp|optin|passin|perfec|SMTP_HELO)$",
+  "^(clen|req_clen|smtp_perform_helo|smtp_state_helo_resp|Tru64|_stati64)$",
   "secur32",
-  # this should be limited to tests/http/*. Short for secure proxy.
-  "proxys",
+  "proxys",  # this should be limited to tests/http/*. Short for secure proxy.
 ]
 
 extend-ignore-re = [
@@ -28,8 +25,8 @@ extend-exclude = [
   ".github/scripts/spellcheck.words",
   "docs/THANKS",
   "packages/*",
-  "scripts/wcurl",
   "projects/Windows/tmpl/curl.vcxproj",
   "projects/Windows/tmpl/libcurl.vcxproj",
+  "scripts/wcurl",
   "tests/data/test*",
 ]