ref: update exp init --type value (#3657)

* ref: update exp init --type value
for #3656

* ref: update exp init --live and --type

* Apply suggestions from code review

* Update content/docs/command-reference/exp/init.md

* Update content/docs/command-reference/exp/init.md

Co-authored-by: dberenbaum <dave@iterative.ai>

content/docs/command-reference/exp/init.md

@@ -12,7 +12,7 @@ usage: dvc exp init [-h] [-q | -v] [--run] [--interactive] [-f]
                     [--explicit] [--name NAME] [--code CODE]
                     [--data DATA] [--models MODELS] [--params PARAMS]
                     [--metrics METRICS] [--plots PLOTS] [--live LIVE]
-                    [--type {default,dl}]
+                    [--type {default,checkpoint}]
                     [command]
 ```
 
@@ -100,12 +100,9 @@ $ dvc exp init './another_script.sh $MYENVVAR'
   `dvc exp run`).
 
 - `--type` - selects the type of the stage to create. Currently it provides two
-  alternatives: `dl` and `default` (no need to specify this one).
-
-  `dl` stages are intended for use in deep-learning scenarios, where metrics and
-  plots are tracked with [DVCLive](/doc/dvclive). This also supports logging
-  [checkpoints](/doc/command-reference/exp/run#checkpoints) during the training
-  of DL models.
+  alternatives: `checkpoint` (supports logging
+  [checkpoints](/doc/command-reference/exp/run#checkpoints) during model
+  training) and `default` (no need to specify this).
 
 - `--code` - set the path to the file or directory where the source code that
   your experiment depends on can be found (if any). Overrides other
@@ -135,7 +132,7 @@ $ dvc exp init './another_script.sh $MYENVVAR'
 
 - `--live` - set the path to the directory where the metrics and plots
   [produced by DVCLive](https://dvc.org/doc/dvclive/dvclive-with-dvc#outputs)
-  will be found.
+  will be found. Overrides the default values for `--metrics` and `--plots`.
 
 - `--explicit` - do not assume default locations of project dependencies and
   outputs. You'll have to provide specific locations via other options or