docs: mozilla#377 update mdbook metrics info

- updated metrics information

- made easier to understand how to use the `cli` for metrics

Author: miguelcsx

rust-code-analysis-book/src/commands/metrics.md

@@ -1,54 +1,45 @@
 # Metrics
 
-Metrics can be printed on screen or exported as different output formats
-through **rust-code-analysis-cli**.
+Metrics can be displayed or exported in various formats using the **rust-code-analysis-cli**.
 
-## Print metrics
+## Display Metrics
 
-For each function space, **rust-code-analysis** computes the list of metrics
-described above. At the end of this process, **rust-code-analysis-cli**
-dumps the result formatted in a certain way on the screen.
-The command used to print the metrics is the following one:
+To compute and display metrics for a given file or directory, run:
 
-```console
+```bash
 rust-code-analysis-cli -m -p /path/to/your/file/or/directory
 ```
 
-The `-p` option represents the path to a file or a directory. If a directory is
-passed as input, **rust-code-analysis-cli** computes the metrics for each file
-contained in it.
+- `-p`: Path to the file or directory to analyze. If a directory is passed, metrics will be computed for all supported files within.
 
-## Export formats
+## Exporting Metrics
 
-Different output formats can be used to export metrics:
+The **rust-code-analysis-cli** supports multiple output formats for exporting metrics, including:
 
-- Cbor
-- Json
-- Toml
-- Yaml
+- CBOR
+- JSON
+- TOML
+- YAML
 
-`Json` and `Toml` can also be exported pretty-printed.
+Both `Json` and `Toml` can be exported as pretty-printed.
 
-### Export command
+### Export Command
 
-For example, if you want to export metrics as a `json` file, run:
+To export metrics as a JSON file:
 
-```console
-rust-code-analysis-cli -m -O json -o /output/path -p /path/to/your/file/or/directory
+```bash
+rust-code-analysis-cli -m -p /path/to/your/file/or/directory -O json -o /path/to/output/directory
 ```
 
-The `-O` option allows you to choose the output format. It supports
-**only** these values: *cbor*, *json*, *toml*, *yaml*.
+- `-O`: Specifies the output format (e.g., json, toml, yaml, cbor).
+- `-o`: Path to save the output file. If not specified, the result will be printed in the shell.
 
-The `-o` option is used to specify the path where your file will be saved.
-It accepts **only** paths. The filename of your output file is the same as
-your input file plus the extension associated to the format. When this option
-is not given, the output is printed on shell.
+## Pretty Print
 
-As we said before, `Json` and `Toml` can be exported as pretty-printed. To do
-so, the `--pr` option is used.
-In the case below, the pretty-printed `json` output will be printed on shell:
+To output pretty-printed JSON metrics:
 
-```console
-rust-code-analysis-cli -m -O json --pr -p /path/to/your/file/or/directory
+```bash
+rust-code-analysis-cli -m -p /path/to/your/file/or/directory --pr -O json
 ```
+
+This command prints the formatted metrics to the console or the specified output path.