fix(docs): update pip install name to simplecontext-ai

Author: root

docs/getting-started/installation.md

@@ -24,9 +24,16 @@ from simplecontext import SimpleContext
 ## Option B — pip install
 
 ```bash
-pip install simplecontext
+pip install simplecontext-ai
 ```
 
+!!! note "Package name vs import name"
+    The PyPI package is named `simplecontext-ai` (name `simplecontext` was already taken).
+    The import stays the same:
+    ```python
+    from simplecontext import SimpleContext
+    ```
+
 ---
 
 ## Option C — SimpleContext-Bot (batteries included)