Update README.md

add quotes to the installation since that's the correct way to install per [slack thread](https://dbt-labs.slack.com/archives/C03KHQRQUBX/p1725919761175009)

README.md

@@ -1,6 +1,6 @@
 # dbt Semantic Layer SDK for Python
 
-> 🧪 This library is still experimental and it's not feature complete yet.
+> 🧪 This library is still experimental and it's not feature-complete yet.
 
 A library for easily accessing [dbt's Semantic Layer](https://docs.getdbt.com/docs/use-dbt-semantic-layer/dbt-sl/) via Python.
 
@@ -10,10 +10,10 @@ To install the SDK, you'll need to specify optional dependencies depending on wh
 
 ```
 # Sync installation
-pip install dbt-sl-sdk[sync]
+pip install "dbt-sl-sdk[sync]"
 
 # Async installation
-pip install dbt-sl-sdk[async]
+pip install "dbt-sl-sdk[sync]"
 ```
 
 ## Usage