tidy-up: miscellaneous

- fix typos.
- badword: add two new words.
- cpp: drop parentheses from standalone `#if` expressions.
- libssh: vertical-align comment block with others.
- clang-format.

Closes #21880

docs/BINDINGS.md

@@ -67,11 +67,11 @@ Go: [go-curl](https://github.com/andelf/go-curl) by ShuYu Wang
 
 [Julia](https://github.com/JuliaWeb/LibCURL.jl) Written by Amit Murthy
 
-[Kapito](https://github.com/puzza007/katipo) is an Erlang HTTP library around libcurl.
+[Katipo](https://github.com/puzza007/katipo) is an Erlang HTTP library around libcurl.
 
 [Lisp](https://common-lisp.net/project/cl-curl/) Written by Liam Healy
 
-[LibQurl](https://github.com/Qriist/LibQurl) a feature rich AutoHotKey v2 (AHKv2) wrapper around libcurl.
+[LibQurl](https://github.com/Qriist/LibQurl) a feature-rich AutoHotKey v2 (AHKv2) wrapper around libcurl.
 
 Lua: [luacurl](https://web.archive.org/web/20201205052437/luacurl.luaforge.net/) by Alexander Marinov, [Lua-curl](https://github.com/Lua-cURL) by Jürgen Hötzel
 
@@ -110,7 +110,7 @@ Bailiff and Bálint Szilakszi,
 
 [R](https://cran.r-project.org/package=curl)
 
-[Rexx](https://rexxcurl.sourceforge.net/) Written Mark Hessling
+[Rexx](https://rexxcurl.sourceforge.net/) Written by Mark Hessling
 
 [Ring](https://ring-lang.github.io/doc1.24/libcurl.html) RingLibCurl by Mahmoud Fayed
 

docs/FAQ.md

@@ -33,7 +33,7 @@ platforms. The [internals document](https://curl.se/docs/install.html#Ports)
 lists more than 110 operating systems and 28 CPU architectures on which curl
 has been reported to run.
 
-libcurl is free, thread-safe, IPv6 compatible, feature rich, well supported
+libcurl is free, thread-safe, IPv6 compatible, feature-rich, well supported
 and fast.
 
 ### curl

docs/VULN-DISCLOSURE-POLICY.md

@@ -157,7 +157,7 @@ made public.
 # Severity levels
 
 The curl project's security team rates security problems using four severity
-levels depending how serious we consider the problem to be. We use **Low**,
+levels depending on how serious we consider the problem to be. We use **Low**,
 **Medium**, **High** and **Critical**. We refrain from using numerical scoring
 of vulnerabilities.
 
@@ -453,7 +453,7 @@ for all internal communication.
 Existing vulnerability disclosure process are followed for any embargoes
 and fixes.
 
-Where possible, public communication are provided:
+Where possible, public communications are provided:
 * regular communication from communication lead (for example daily update)
 * asynchronous communication from incident lead
 

docs/libcurl/curl_global_sslset.md

@@ -40,7 +40,7 @@ specified, the *name* is ignored.
 
 If neither *id* nor *name* are specified, the function fails with
 **CURLSSLSET_UNKNOWN_BACKEND** and set the *avail* pointer to the
-NULL-terminated list of available backends. The available backends are those
+null-terminated list of available backends. The available backends are those
 that this particular build of libcurl supports.
 
 Since libcurl 7.60.0, the *avail* pointer is always set to the list of
@@ -50,7 +50,7 @@ Upon success, the function returns **CURLSSLSET_OK**.
 
 If the specified SSL backend is not available, the function returns
 **CURLSSLSET_UNKNOWN_BACKEND** and sets the *avail* pointer to a
-NULL-terminated list of available SSL backends. In this case, you may call the
+null-terminated list of available SSL backends. In this case, you may call the
 function again to try to select a different backend.
 
 The SSL backend can be set only once. If it has already been set, a subsequent