fix: Update docs for codegen create command to include required PATH parameter (#963)

Recommended by @enismaxim1

This PR updates the documentation for the `codegen create` command to
correctly include the required PATH parameter.

## Changes

- Updated examples in various documentation files to show the correct
usage: `codegen create my-function . -d "describe what you want to do"`
- Added explanations about the PATH parameter being required
- Updated command usage syntax in the create.mdx file
- Fixed examples in init.mdx, dot-codegen.mdx, reusable-codemods.mdx,
and work-with-ai.mdx

This addresses the issue reported in Slack where the instructions after
running `codegen init` were incorrect, as they didn't include the
required PATH parameter.

Fixes the issue where users were seeing errors when following the
documentation without specifying a path.

Co-authored-by: codegen-sh[bot] <131295404+codegen-sh[bot]@users.noreply.github.com>

Author: codegen-sh[bot]

docs/building-with-codegen/dot-codegen.mdx

@@ -78,7 +78,7 @@ Codegen automatically adds appropriate entries to your `.gitignore`:
 The `codemods/` directory is where your transformation functions live. You can create new codemods using:
 
 ```bash
-codegen create my-codemod [--description "what it does"]
+codegen create my-codemod PATH [--description "what it does"]
 ```
 
 This will:
@@ -115,7 +115,7 @@ After initializing your `.codegen` directory:
 
 1. Create your first codemod:
 ```bash
-codegen create my-codemod -d "describe what you want to do"
+codegen create my-codemod . -d "describe what you want to do"
 ```
 
 2. Run it:

docs/building-with-codegen/reusable-codemods.mdx

@@ -12,7 +12,7 @@ Codegen enables you to create reusable code transformations using Python functio
 The easiest way to create a new codemod is using the CLI [create](/cli/create) command:
 
 ```bash
-codegen create rename-function
+codegen create rename-function .
 ```
 
 This creates a new codemod in your `.codegen/codemods` directory:
@@ -37,7 +37,7 @@ def run(codebase: Codebase):
 You can use AI to generate an initial implementation by providing a description:
 
 ```bash
-codegen create rename-function -d "Rename the getUserData function to fetchUserProfile"
+codegen create rename-function . -d "Rename the getUserData function to fetchUserProfile"
 ```
 
 This will:

docs/cli/create.mdx

@@ -8,26 +8,27 @@ iconType: "solid"
 The `create` command generates a new codemod function with the necessary boilerplate.
 
 ```bash
-codegen create rename-function
+codegen create rename-function .
 ```
 
 ## Usage
 
 ```bash
-codegen create NAME [OPTIONS]
+codegen create NAME PATH [OPTIONS]
 ```
 
 ## Arguments
 
 - `NAME`: The name of the codemod to create (e.g., "rename-function")
+- `PATH`: The path where the codemod should be created (e.g., "." for current directory)
 
 ## Options
 
 - `--description`, `-d`: A description of what the codemod should do. This will be used to generate an AI-powered implementation.
 
 ## Generated Files
 
-When you run `codegen create rename-function`, it creates:
+When you run `codegen create rename-function .`, it creates:
 
 ```
 .codegen/
@@ -63,12 +64,12 @@ if __name__ == "__main__":
 
 Create a basic codemod:
 ```bash
-codegen create rename-function
+codegen create rename-function .
 ```
 
 Create with an AI-powered implementation:
 ```bash
-codegen create rename-function -d "Rename the getUserData function to fetchUserProfile"
+codegen create rename-function . -d "Rename the getUserData function to fetchUserProfile"
 ```
 
 ## Next Steps

docs/cli/init.mdx

@@ -92,9 +92,11 @@ After initializing:
 1. Create your first codemod:
 
 ```bash
-codegen create my-function -d "describe what you want to do"
+codegen create my-function . -d "describe what you want to do"
 ```
 
+Note: The second parameter (`.`) specifies the path where the codemod should be created. This is required.
+
 2. Run it:
 
 ```bash

docs/introduction/work-with-ai.mdx

@@ -28,7 +28,7 @@ The [Codegen CLI](/cli/about) provides commands to generate `.md` files that can
 When you create a new codemod via [codegen create](/cli/create):
 
 ```bash
-codegen create delete-dead-imports --description "Delete unused imports"
+codegen create delete-dead-imports . --description "Delete unused imports"
 ```
 
 Codegen automatically generates an optimized ["system prompt"](https://news.ycombinator.com/item?id=37880023) that includes:
@@ -52,7 +52,7 @@ This `.md` file can be used with any AI assistant (Claude, GPT-4, etc.) to get m
   <Step title="Create a codemod with description">
     Use the [create command](/cli/create) with a detailed description of what you want to accomplish:
     ```bash
-    codegen create modernize-components --description "Convert class components to functional components with hooks"
+    codegen create modernize-components . --description "Convert class components to functional components with hooks"
     ```
   </Step>
   <Step title="Review the generated system prompt">

src/codegen/cli/commands/init/main.py

@@ -46,6 +46,6 @@ def init_command(path: str | None = None, token: str | None = None, language: st
     # Print next steps
     rich.print("\n[bold]What's next?[/bold]\n")
     rich.print("1. Create a function:")
-    rich.print(format_command('codegen create my-function -d "describe what you want to do"'))
+    rich.print(format_command('codegen create my-function . -d "describe what you want to do"'))
     rich.print("2. Run it:")
     rich.print(format_command("codegen run my-function --apply-local"))