diff --git a/docs/help-typer.md b/docs/help-typer.md
index 98cf4069e9..221492db38 100644
--- a/docs/help-typer.md
+++ b/docs/help-typer.md
@@ -234,7 +234,7 @@ As you have seen in the documentation, Typer is built on top of Click.
 
 You can also sponsor:
 
-* Pallets Project (Click maintainers)<a href="https://palletsprojects.com/donate" class="external-link" target="_blank">via the PSF</a> or <a href="https://tidelift.com/subscription/pkg/pypi-click" class="external-link" target="_blank">via Tidelift</a>
+* Pallets Project (Click maintainers) <a href="https://palletsprojects.com/donate" class="external-link" target="_blank">via the PSF</a> or <a href="https://tidelift.com/subscription/pkg/pypi-click" class="external-link" target="_blank">via Tidelift</a>
 
 ---
 
diff --git a/docs/tutorial/arguments/optional.md b/docs/tutorial/arguments/optional.md
index c52e689a38..6bda570843 100644
--- a/docs/tutorial/arguments/optional.md
+++ b/docs/tutorial/arguments/optional.md
@@ -49,7 +49,7 @@ Now let's see an alternative way to create the same *CLI argument*:
 
     If you have an older version, you would get errors when trying to use `Annotated`.
 
-    Make sure you Upgrade the Typer version to at least 0.9.0 before using `Annotated`.
+    Make sure you upgrade the Typer version to at least 0.9.0 before using `Annotated`.
 
 Before, you had this function parameter:
 
diff --git a/docs_src/parameter_types/custom_types/tutorial001.py b/docs_src/parameter_types/custom_types/tutorial001.py
index 456c46b52f..1ccf24cdfe 100644
--- a/docs_src/parameter_types/custom_types/tutorial001.py
+++ b/docs_src/parameter_types/custom_types/tutorial001.py
@@ -15,7 +15,7 @@ def parse_custom_class(value: str):
 
 def main(
     custom_arg: CustomClass = typer.Argument(parser=parse_custom_class),
-    custom_opt: CustomClass = typer.Option("Y", parser=parse_custom_class),
+    custom_opt: CustomClass = typer.Option("Foo", parser=parse_custom_class),
 ):
     print(f"custom_arg is {custom_arg}")
     print(f"--custom-opt is {custom_opt}")
diff --git a/tests/test_others.py b/tests/test_others.py
index 7986e1d7f0..8c78520029 100644
--- a/tests/test_others.py
+++ b/tests/test_others.py
@@ -30,7 +30,7 @@ def test_defaults_from_info():
     assert value
 
 
-def test_too_may_parsers():
+def test_too_many_parsers():
     def custom_parser(value: str) -> int:
         return int(value)  # pragma: no cover
 
diff --git a/tests/test_tutorial/test_parameter_types/test_custom_types/test_tutorial001.py b/tests/test_tutorial/test_parameter_types/test_custom_types/test_tutorial001.py
index 6e21535fa6..047dfff142 100644
--- a/tests/test_tutorial/test_parameter_types/test_custom_types/test_tutorial001.py
+++ b/tests/test_tutorial/test_parameter_types/test_custom_types/test_tutorial001.py
@@ -26,7 +26,7 @@ def test_parse_custom_type():
 def test_parse_custom_type_with_default():
     result = runner.invoke(app, ["0"])
     assert "custom_arg is <CustomClass: value=00>" in result.output
-    assert "custom-opt is <CustomClass: value=YY>" in result.output
+    assert "custom-opt is <CustomClass: value=FooFoo>" in result.output
 
 
 def test_script():