Fix typos and whitespace

Added "the" before "use"
Add missing whitespace
Removed unnecessary apostrophe in FIPS.md

CLA: trivial

Reviewed-by: Paul Yang <paulyang.inf@gmail.com>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Neil Horman <nhorman@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/28362)

README-FIPS.md

@@ -18,7 +18,7 @@ See <https://www.openssl.org/source/> for information related to OpenSSL
 FIPS certificates and Security Policies.
 
 Newer OpenSSL Releases that include security or bug fixes can be used to build
-all other components (such as the core API's, TLS and the default, base and
+all other components (such as the core APIs, TLS and the default, base and
 legacy providers) without any restrictions, but the FIPS provider must be built
 as specified in the Security Policy (normally with a different version of the
 source code).

README-QUIC.md

@@ -12,7 +12,7 @@ some of the following resources:
 - The [OpenSSL Guide] incorporates various code samples. The complete source
   for these can be [found in the source tree under `demos/guide`](./demos/guide/).
 - The [openssl-quic(7) manual page], which provides a basic reference overview
-  of QUIC functionality and how use of QUIC differs from use of TLS with regard
+  of QUIC functionality and how the use of QUIC differs from the use of TLS with regard
   to our API.
 - The [Demo-Driven Design (DDD)][DDD] demos, which demonstrate the use of QUIC
   using simple examples. These can be [found in the source tree under
@@ -61,7 +61,7 @@ $ openssl s_client -quic -alpn myalpn -connect host:port
 
 In the above example replace `host` with the hostname of the server (e.g.
 `www.example.com`) and `port` with the port for the server (e.g. `443`). Replace
-`myalpn` with the Application Layer Protocol to use (e.g.`h3` represents
+`myalpn` with the Application Layer Protocol to use (e.g. `h3` represents
 HTTP/3). IANA maintains a standard list of [ALPN ids] that can be used.
 
 This example connects to a QUIC server and opens a single bidirectional stream.