Fixed internal link

The internal link to the top of the page didn't work, went straight to a 404. There were two typos in the internal link (naming and chapter). Also adjusted the description of the link so it matches the original header: "Create a BitcoinRPC Project" instead of "Creating a BitcoinRPC Project"

Author: zerotobtc

18_4_Accessing_Bitcoind_with_Python.md

@@ -461,7 +461,8 @@ Learn more about "Talking to Bitcoin in Other Languages" in [18.5: Accessing Bit
 
 ## Variant: Build Python from Source
 
-If you need to install Python 3 from source, follow these instructions, then continue with ["Creating a BitcoinRPC Project"](17_4_Accessing_Bitcoind_with_Python.md#creating-a-bitcoinrpc-project).
+If you need to install Python 3 from source, follow these instructions, then continue with ["Create a BitcoinRPC Project"](18_4_Accessing_Bitcoind_with_Python.md#create-a-bitcoinrpc-project).
+
 
 ### 1. Install Dependencies
 ```sh