misc: typo and grammar fixes

- Replace `Github` with `GitHub`.
- Replace `windows` with `Windows`
- Replace `advice` with `advise` where a verb is used.
- A few fixes on removing repeated words.
- Replace `a HTTP` with `an HTTP`

Closes #9802

docs/examples/anyauthput.c

@@ -44,7 +44,7 @@
 #endif
 
 /*
- * This example shows a HTTP PUT operation with authentication using "any"
+ * This example shows an HTTP PUT operation with authentication using "any"
  * type. It PUTs a file given as a command line argument to the URL also given
  * on the command line.
  *

docs/examples/cacertinmem.c

@@ -22,7 +22,7 @@
  *
  ***************************************************************************/
 /* <DESC>
- * CA cert in memory with OpenSSL to get a HTTPS page.
+ * CA cert in memory with OpenSSL to get an HTTPS page.
  * </DESC>
  */
 

docs/examples/http-post.c

@@ -40,7 +40,7 @@ int main(void)
   curl = curl_easy_init();
   if(curl) {
     /* First set the URL that is about to receive our POST. This URL can
-       just as well be a https:// URL if that is what should receive the
+       just as well be an https:// URL if that is what should receive the
        data. */
     curl_easy_setopt(curl, CURLOPT_URL, "http://postit.example.com/moo.cgi");
     /* Now specify the POST data */

docs/examples/httpput-postfields.c

@@ -43,7 +43,7 @@ static const char olivertwist[]=
    509 byte limit. */
 
 /*
- * This example shows a HTTP PUT operation that sends a fixed buffer with
+ * This example shows an HTTP PUT operation that sends a fixed buffer with
  * CURLOPT_POSTFIELDS to the URL given as an argument.
  */
 

docs/examples/httpput.c

@@ -31,7 +31,7 @@
 #include <curl/curl.h>
 
 /*
- * This example shows a HTTP PUT operation. PUTs a file given as a command
+ * This example shows an HTTP PUT operation. PUTs a file given as a command
  * line argument to the URL also given on the command line.
  *
  * This example also uses its own read callback.

docs/examples/multi-app.c

@@ -38,7 +38,7 @@
 #include <curl/curl.h>
 
 /*
- * Download a HTTP file and upload an FTP file simultaneously.
+ * Download an HTTP file and upload an FTP file simultaneously.
  */
 
 #define HANDLECOUNT 2   /* Number of simultaneous transfers */

docs/examples/multi-debugcallback.c

@@ -126,7 +126,7 @@ int my_trace(CURL *handle, curl_infotype type,
 }
 
 /*
- * Simply download a HTTP file.
+ * Simply download an HTTP file.
  */
 int main(void)
 {

docs/examples/multi-legacy.c

@@ -38,7 +38,7 @@
 #include <curl/curl.h>
 
 /*
- * Download a HTTP file and upload an FTP file simultaneously.
+ * Download an HTTP file and upload an FTP file simultaneously.
  */
 
 #define HANDLECOUNT 2   /* Number of simultaneous transfers */

docs/examples/multi-single.c

@@ -37,7 +37,7 @@
 #include <curl/curl.h>
 
 /*
- * Simply download a HTTP file.
+ * Simply download an HTTP file.
  */
 int main(void)
 {

docs/examples/post-callback.c

@@ -101,7 +101,7 @@ int main(void)
     curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
 
     /*
-      If you use POST to a HTTP 1.1 server, you can send data without knowing
+      If you use POST to an HTTP 1.1 server, you can send data without knowing
       the size before starting the POST if you use chunked encoding. You
       enable this by adding a header like "Transfer-Encoding: chunked" with
       CURLOPT_HTTPHEADER. With HTTP 1.0 or without chunked transfer, you must

docs/examples/postinmemory.c

@@ -22,7 +22,7 @@
  *
  ***************************************************************************/
 /* <DESC>
- * Make a HTTP POST with data from memory and receive response in memory.
+ * Make an HTTP POST with data from memory and receive response in memory.
  * </DESC>
  */
 #include <stdio.h>