Fix a few typos

Author: Pietro Monticone

guides/prompts-advanced-usage.md

@@ -281,7 +281,7 @@ Input: A common effect of smoking lots of cigarettes in one’s lifetime is a hi
 Knowledge: Those who consistently averaged less than one cigarette per day over their lifetime had nine times the risk of dying from lung cancer than never smokers. Among people who smoked between one and 10 cigarettes per day, the risk of dying from lung cancer was nearly 12 times higher than that of never smokers.
 
 Input: A rock is the same size as a pebble.
-Knowledge: A pebble is a clast of rock with a particle size of 4 to 64 millimetres based on the Udden-Wentworth scale of sedimentology. Pebbles are generally considered larger than granules (2 to 4 millimetres diameter) and smaller than cobbles (64 to 256 millimetres diameter).
+Knowledge: A pebble is a clast of rock with a particle size of 4 to 64 millimeters based on the Udden-Wentworth scale of sedimentology. Pebbles are generally considered larger than granules (2 to 4 millimeters diameter) and smaller than cobbles (64 to 256 millimeters diameter).
 
 Input: Part of golf is trying to get a higher point total than others.
 Knowledge:

guides/prompts-basic-usage.md

@@ -124,7 +124,7 @@ neutral
 Perfect! This time the model returned `neutral` which is the specific label I was looking for. It seems that the example provided in the prompt helped the model to be specific in its output. To highlight why sometimes being specific is important, checkout this example and spot the problem:
 
 ```
-Classify the text into nutral, negative or positive. 
+Classify the text into neutral, negative or positive. 
 
 Text: I think the vacation is okay.
 Sentiment:
@@ -149,7 +149,7 @@ The following is a conversation with an AI research assistant. The assistant ton
 
 Human: Hello, who are you?
 AI: Greeting! I am an AI research assistant. How can I help you today?
-Human: Can you tell me about the creation of blackholes?
+Human: Can you tell me about the creation of black holes?
 AI:
 ```