docs: spell it Rustls with a capital R

I believe this is how the project itself uses it.

Closes #19702

docs/INSTALL.md

@@ -141,7 +141,7 @@ These options are provided to select the TLS backend to use.
  - GnuTLS: `--with-gnutls`.
  - mbedTLS: `--with-mbedtls`
  - OpenSSL: `--with-openssl` (also for BoringSSL, AWS-LC, LibreSSL, and quictls)
- - rustls: `--with-rustls`
+ - Rustls: `--with-rustls`
  - Schannel: `--with-schannel`
  - wolfSSL: `--with-wolfssl`
 

docs/cmdline-opts/ca-native.md

@@ -34,8 +34,8 @@ Fedora, RHEL), macOS, Android and iOS. (Added in 8.3.0)
 This option works with GnuTLS (Added in 8.5.0) and also uses Apple
 SecTrust when libcurl is built with it. (Added in 8.17.0)
 
-This option works with rustls on Windows, macOS, Android and iOS. On Linux it
-is equivalent to using the Mozilla CA certificate bundle. When used with rustls
+This option works with Rustls on Windows, macOS, Android and iOS. On Linux it
+is equivalent to using the Mozilla CA certificate bundle. When used with Rustls
 _only_ the native CA store is consulted, not other locations set at run time or
 build time. (Added in 8.13.0)
 

docs/cmdline-opts/tls-earlydata.md

@@ -21,7 +21,7 @@ Enable the use of TLSv1.3 early data, also known as '0RTT' where possible.
 This has security implications for the requests sent that way.
 
 This option can be used when curl is built to use GnuTLS, wolfSSL, quictls and
-OpenSSL as a TLS provider (but not BoringSSL, AWS-LC, or rustls).
+OpenSSL as a TLS provider (but not BoringSSL, AWS-LC, or Rustls).
 
 If a server supports this TLSv1.3 feature, and to what extent, is announced
 as part of the TLS "session" sent back to curl. Until curl has seen such

docs/libcurl/opts/CURLINFO_CERTINFO.md

@@ -14,7 +14,7 @@ TLS-backend:
   - OpenSSL
   - GnuTLS
   - Schannel
-  - rustls
+  - Rustls
 Added-in: 7.19.1
 ---
 

docs/libcurl/opts/CURLOPT_CAINFO_BLOB.md

@@ -15,7 +15,7 @@ TLS-backend:
   - OpenSSL
   - GnuTLS
   - mbedTLS
-  - rustls
+  - Rustls
   - wolfSSL
   - Schannel
 Added-in: 7.77.0

docs/libcurl/opts/CURLOPT_CERTINFO.md

@@ -16,7 +16,7 @@ TLS-backend:
   - OpenSSL
   - GnuTLS
   - Schannel
-  - rustls
+  - Rustls
 Added-in: 7.19.1
 ---
 

docs/libcurl/opts/CURLOPT_CRLFILE.md

@@ -14,7 +14,7 @@ TLS-backend:
   - GnuTLS
   - mbedTLS
   - OpenSSL
-  - rustls
+  - Rustls
 Added-in: 7.19.0
 ---
 

docs/libcurl/opts/CURLOPT_ECH.md

@@ -11,7 +11,7 @@ Protocol:
 TLS-backend:
   - OpenSSL
   - wolfSSL
-  - rustls
+  - Rustls
 Added-in: 8.8.0
 ---
 
@@ -33,7 +33,7 @@ ECH is only compatible with TLSv1.3.
 
 This experimental feature requires a special build of OpenSSL, as ECH is not
 yet supported in OpenSSL releases. In contrast ECH is supported by the latest
-BoringSSL, wolfSSL and rustls-ffi releases.
+BoringSSL, wolfSSL and Rustls-ffi releases.
 
 There is also a known issue with using wolfSSL which does not support ECH when
 the HelloRetryRequest mechanism is used.

docs/libcurl/opts/CURLOPT_PROXY_CAINFO_BLOB.md

@@ -18,7 +18,7 @@ Protocol:
   - TLS
 TLS-backend:
   - OpenSSL
-  - rustls
+  - Rustls
   - Schannel
 Added-in: 7.77.0
 ---

docs/libcurl/opts/CURLOPT_PROXY_SSL_CIPHER_LIST.md

@@ -17,7 +17,7 @@ TLS-backend:
   - Schannel
   - wolfSSL
   - mbedTLS
-  - rustls
+  - Rustls
 Added-in: 7.52.0
 ---
 

docs/libcurl/opts/CURLOPT_PROXY_TLS13_CIPHERS.md

@@ -16,7 +16,7 @@ TLS-backend:
   - OpenSSL
   - wolfSSL
   - mbedTLS
-  - rustls
+  - Rustls
 Added-in: 7.61.0
 ---
 

docs/libcurl/opts/CURLOPT_SSL_CIPHER_LIST.md

@@ -17,7 +17,7 @@ TLS-backend:
   - Schannel
   - wolfSSL
   - mbedTLS
-  - rustls
+  - Rustls
   - GnuTLS
 Added-in: 7.9
 ---

docs/libcurl/opts/CURLOPT_SSL_OPTIONS.md

@@ -79,8 +79,8 @@ Works with wolfSSL on Windows, Linux (Debian, Ubuntu, Gentoo, Fedora, RHEL),
 macOS, Android and iOS (added in 8.3.0); with GnuTLS (added in 8.5.0) and with
 OpenSSL and its forks (LibreSSL, BoringSSL, etc) on Windows (Added in 7.71.0).
 
-This works with rustls on Windows, macOS, Android and iOS. On Linux it is
-equivalent to using the Mozilla CA certificate bundle. When used with rustls
+This works with Rustls on Windows, macOS, Android and iOS. On Linux it is
+equivalent to using the Mozilla CA certificate bundle. When used with Rustls
 _only_ the native CA store is consulted, not other locations set at run time or
 build time. (Added in 8.13.0)
 

docs/libcurl/opts/CURLOPT_TLS13_CIPHERS.md

@@ -17,7 +17,7 @@ TLS-backend:
   - OpenSSL
   - wolfSSL
   - mbedTLS
-  - rustls
+  - Rustls
 Added-in: 7.61.0
 ---
 

scripts/cd2nroff

@@ -189,7 +189,7 @@ my %knowntls = (
     'GnuTLS' => 1,
     'mbedTLS' => 1,
     'OpenSSL' => 1,
-    'rustls' => 1,
+    'Rustls' => 1,
     'Schannel' => 1,
     'wolfSSL' => 1,
     'All' => 1,