avoid there's, use there is

internals/content-encoding.md

@@ -8,7 +8,7 @@
  schemes include `deflate` (the zlib algorithm), `gzip`, `br` (brotli) and
  `compress`. A client requests that the server perform an encoding by
  including an `Accept-Encoding` header in the request document. The value of
- the header should be one of the recognized tokens `deflate`, ... (there's a
+ the header should be one of the recognized tokens `deflate`, ... (there is a
  way to register new schemes/tokens, see sec 3.5 of the spec). A server MAY
  honor the client's encoding request. When a response is encoded, the server
  includes a `Content-Encoding` header in the response. The value of the

internals/structs.md

@@ -112,8 +112,8 @@ of date at times.
   Each unique protocol that is supported by libcurl needs to provide at least
   one `Curl_handler` struct. It defines what the protocol is called and what
   functions the main code should call to deal with protocol specific issues.
-  In general, there's a source file named `[protocol].c` in which there's a
-  `struct Curl_handler Curl_handler_[protocol]` declared. In `url.c` there's
+  In general, there is a source file named `[protocol].c` in which there is a
+  `struct Curl_handler Curl_handler_[protocol]` declared. In `url.c` there is
   then the main array with all individual `Curl_handler` structs pointed to
   from a single array which is scanned through when a URL is given to libcurl
   to work with.

internals/tests/file-format.md

@@ -315,7 +315,7 @@ about to issue.
 
 - `REPLY [command] [return value] [response string]` - Changes how the server
   responds to the [command]. [response string] is evaluated as a perl string,
-  so it can contain embedded `\r\n`, for example. There's a special [command]
+  so it can contain embedded `\r\n`, for example. There is a special [command]
   named "welcome" (without quotes) which is the string sent immediately on
   connect as a welcome.
 - `REPLYLF` (like above but sends the response terminated with LF-only and not
@@ -502,18 +502,18 @@ that is returned. The last slash in the URL must be followed by a number. That
 number (N) will be used by the test-server to load test case N and return the
 data that is defined within the `<reply><data></data></reply>` section.
 
-If there's no test number found above, the HTTP test server will use the
+If there is no test number found above, the HTTP test server will use the
 number following the last dot in the given hostname (made so that a CONNECT
 can still pass on test number) so that "foo.bar.123" gets treated as test case
 123. Alternatively, if an IPv6 address is provided to CONNECT, the last
 hexadecimal group in the address will be used as the test number! For example
 the address "[1234::ff]" would be treated as test case 255.
 
 Set `type="perl"` to write the test case as a perl script. It implies that
-there's no memory debugging and valgrind gets shut off for this test.
+there is no memory debugging and valgrind gets shut off for this test.
 
 Set `type="shell"` to write the test case as a shell script. It implies that
-there's no memory debugging and valgrind gets shut off for this test.
+there is no memory debugging and valgrind gets shut off for this test.
 
 Set `option="no-output"` to prevent the test script to slap on the `--output`
 argument that directs the output to a file. The `--output` is also not added