docs: add quotation marks for marimo[sql] commands

docs/guides/working_with_data/sql.md

@@ -8,7 +8,7 @@ To create a SQL cell, you first need to install additional dependencies,
 including [duckdb](https://duckdb.org/):
 
 ```bash
-pip install marimo[sql]
+pip install 'marimo[sql]'
 ```
 
 ```{admonition} Examples

frontend/src/components/editor/renderers/CellArray.tsx

@@ -254,7 +254,7 @@ const AddCellButtons: React.FC<{
               <div className="flex flex-col">
                 <span>
                   Additional dependencies required:
-                  <Kbd className="inline">pip install marimo[sql]</Kbd>.
+                  <Kbd className="inline">pip install 'marimo[sql]'</Kbd>.
                 </span>
                 <span>
                   You will need to restart the notebook after installing.

marimo/_tutorials/sql.py

@@ -27,7 +27,7 @@ def __(mo):
         including [duckdb](https://duckdb.org/). Obtain these dependencies with
 
         ```bash
-        pip install marimo[sql]
+        pip install 'marimo[sql]'
         ```
         """
     )