fix: typo

Author: janu8ry

README.rst

@@ -48,10 +48,11 @@ Otherwise to get voice support you should run the following command:
 To install additional packages for speedup, run the following command:
 
 .. code:: sh
+
     # Linux/macOS
-    python3 -m pip install -U "nextcord[speed]"
+    python3 -m pip install -U "py-cord[speed]"
     # Windows
-    py -3 -m pip install -U nextcord[speed]
+    py -3 -m pip install -U py-cord[speed]
 
 
 To install the development version, do the following: