Make type-hint tag

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diff --git a/bot/resources/tags/type-hint.md b/bot/resources/tags/type-hint.md
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+**Type Hints**
+
+A typehint indicates what type something should be. For example,
+```python
+def add(a: int, b: int) -> int:
+    sum: int = a + b
+    return sum
+```
+In this case, `a` and `b` are expected to be ints, and the function returns an int. We also declare an intermediate variable `sum`, which we indicate to be an int.
+
+It's important to note these are just hints and have no runtime effect. For example,
+```python
+#uh oh
+add("hello ", "world")
+```
+This code will run without error, even though it doesn't follow the function's type hints.