docs: Update documentation with new prefixless config options

Remove the old config options from the documentation and replace them
with the new form (without the redundant `kata-` prefix).

Signed-off-by: Daniel Knittl-Frank <knittl89+git@googlemail.com>

docs/Documentation-Requirements.md

@@ -25,7 +25,7 @@ All documents must:
 - Have a `.md` file extension.
 - Include a TOC (table of contents) at the top of the document with links to
   all heading sections. We recommend using the
-  [`check-markdown`](https://github.com/kata-containers/tests/tree/master/cmd/check-markdown)
+  [`kata-check-markdown`](https://github.com/kata-containers/tests/tree/master/cmd/check-markdown)
   tool to generate the TOC.
 - Be linked to from another document in the same repository.
 

docs/design/architecture.md

@@ -137,7 +137,7 @@ The runtime uses a TOML format configuration file called `configuration.toml`. B
 
 The actual configuration file paths can be determined by running:
 ```
-$ kata-runtime --kata-show-default-config-paths
+$ kata-runtime --show-default-config-paths
 ```
 Most users will not need to modify the configuration file.
 

docs/how-to/how-to-import-kata-logs-with-fluentd.md

@@ -222,7 +222,7 @@ test to check the parsing works. The resulting output from Fluentd is:
   "_COMM":"kata-runtime",
   "_EXE":"/opt/kata/bin/kata-runtime",
   "SYSLOG_TIMESTAMP":"Feb 21 10:31:27 ",
-  "_CMDLINE":"/opt/kata/bin/kata-runtime --kata-config /opt/kata/share/defaults/kata-containers/configuration-qemu.toml --root /run/runc state 7cdd31660d8705facdadeb8598d2c0bd008e8142c54e3b3069abd392c8d58997",
+  "_CMDLINE":"/opt/kata/bin/kata-runtime --config /opt/kata/share/defaults/kata-containers/configuration-qemu.toml --root /run/runc state 7cdd31660d8705facdadeb8598d2c0bd008e8142c54e3b3069abd392c8d58997",
   "SYSLOG_PID":"14314",
   "_PID":"14314",
   "MESSAGE":"time=\"2020-02-21T10:31:27.810781647Z\" level=info msg=\"release sandbox\" arch=amd64 command=state container=7cdd31660d8705facdadeb8598d2c0bd008e8142c54e3b3069abd392c8d58997 name=kata-runtime pid=14314 sandbox=1c3e77cad66aa2b6d8cc846f818370f79cb0104c0b840f67d0f502fd6562b68c source=virtcontainers subsystem=sandbox",
@@ -281,7 +281,7 @@ own file (rather than into the system journal).
 
 ```bash
 #!/bin/bash
-/opt/kata/bin/kata-runtime --kata-config "/opt/kata/share/defaults/kata-containers/configuration-qemu.toml" --log-format=json --log=/var/log/kata-runtime.log $@
+/opt/kata/bin/kata-runtime --config "/opt/kata/share/defaults/kata-containers/configuration-qemu.toml" --log-format=json --log=/var/log/kata-runtime.log $@
 ```
 
 And then we'll add the Fluentd config section to parse that file. Note, we inform the parser that Kata is

docs/how-to/how-to-use-kata-containers-with-acrn.md

@@ -91,7 +91,7 @@ To configure Kata Containers with ACRN, copy the generated `configuration-acrn.t
 The following command shows full paths to the `configuration.toml` files that the runtime loads. It will use the first path that exists. (Please make sure the kernel and image paths are set correctly in the `configuration.toml` file)
 
 ```bash
-$ sudo kata-runtime --kata-show-default-config-paths
+$ sudo kata-runtime --show-default-config-paths
 ```
 
 >**Warning:** Please offline CPUs using [this](offline_cpu.sh) script, else VM launches will fail.

src/runtime/README.md

@@ -129,14 +129,14 @@ The below command lists the full paths to the configuration files that the
 runtime attempts to load. The first path that exists will be used:
 
 ```bash
-$ kata-runtime --kata-show-default-config-paths
+$ kata-runtime --show-default-config-paths
 ```
 
 Aside from the built-in locations, it is possible to specify the path to a
-custom configuration file using the `--kata-config` option:
+custom configuration file using the `--config` option:
 
 ```bash
-$ kata-runtime --kata-config=/some/where/configuration.toml ...
+$ kata-runtime --config=/some/where/configuration.toml ...
 ```
 
 The runtime will log the full path to the configuration file it is using. See