Fix broken links in crypto, docker and hetzner modules. (#67360)

lib/ansible/modules/crypto/acme/acme_certificate_revoke.py

@@ -98,7 +98,7 @@ options:
   revoke_reason:
     description:
       - "One of the revocation reasonCodes defined in
-         L(https://tools.ietf.org/html/rfc5280#section-5.3.1, Section 5.3.1 of RFC5280)."
+         L(Section 5.3.1 of RFC5280,https://tools.ietf.org/html/rfc5280#section-5.3.1)."
       - "Possible values are C(0) (unspecified), C(1) (keyCompromise),
          C(2) (cACompromise), C(3) (affiliationChanged), C(4) (superseded),
          C(5) (cessationOfOperation), C(6) (certificateHold),

lib/ansible/modules/crypto/openssl_privatekey.py

@@ -18,7 +18,7 @@ version_added: "2.3"
 short_description: Generate OpenSSL private keys
 description:
     - This module allows one to (re)generate OpenSSL private keys.
-    - One can generate L(RSA,https://en.wikipedia.org/wiki/RSA_(cryptosystem)),
+    - One can generate L(RSA,https://en.wikipedia.org/wiki/RSA_%28cryptosystem%29),
       L(DSA,https://en.wikipedia.org/wiki/Digital_Signature_Algorithm),
       L(ECC,https://en.wikipedia.org/wiki/Elliptic-curve_cryptography) or
       L(EdDSA,https://en.wikipedia.org/wiki/EdDSA) private keys.

lib/ansible/modules/net_tools/hetzner_firewall.py

@@ -103,7 +103,7 @@ options:
               - TCP flags or logical combination of flags.
               - Flags supported by Hetzner are C(syn), C(fin), C(rst), C(psh) and C(urg).
               - They can be combined with C(|) (logical or) and C(&) (logical and).
-              - See U(the documentation,https://wiki.hetzner.de/index.php/Robot_Firewall/en#Parameter)
+              - See L(the documentation,https://wiki.hetzner.de/index.php/Robot_Firewall/en#Parameter)
                 for more information.
             type: str
           action:

lib/ansible/plugins/doc_fragments/docker.py

@@ -99,7 +99,7 @@ notes:
     You can define C(DOCKER_HOST), C(DOCKER_TLS_HOSTNAME), C(DOCKER_API_VERSION), C(DOCKER_CERT_PATH), C(DOCKER_SSL_VERSION),
     C(DOCKER_TLS), C(DOCKER_TLS_VERIFY) and C(DOCKER_TIMEOUT). If you are using docker machine, run the script shipped
     with the product that sets up the environment. It will set these variables for you. See
-    U(https://docker-py.readthedocs.io/en/stable/machine/) for more details.
+    U(https://docs.docker.com/machine/reference/env/) for more details.
   - When connecting to Docker daemon with TLS, you might need to install additional Python packages.
     For the Docker SDK for Python, version 2.4 or newer, this can be done by installing C(docker[tls]) with M(pip).
   - Note that the Docker SDK for Python only allows to specify the path to the Docker configuration for very few functions.