Fix typos with codespell

Using codespell 2.0.0.

Method:
```
$ cat > ../godot-word-whitelist.txt << EOF
ang
curvelinear
dof
doubleclick
fave
findn
GIRD
leapyear
lod
merchantibility
nd
numer
ois
ony
que
seeked
synching
te
uint
unselect
webp
EOF

$ codespell -w -q 3 -I ../godot-word-whitelist.txt --skip="./thirdparty,*.po"
$ git diff // undo unwanted changes
```

doc/classes/Array.xml

@@ -333,14 +333,14 @@
 				[gdscript]
 				# Will evaluate to `true`.
 				if 2 in [2, 4, 6, 8]:
-				    print("Containes!")
+				    print("Contains!")
 				[/gdscript]
 				[csharp]
 				// As there is no "in" keyword in C#, you have to use Contains
 				var array = new Godot.Collections.Array{2, 4, 6, 8};
 				if (array.Contains(2))
 				{
-				    GD.Print("Containes!");
+				    GD.Print("Contains!");
 				}
 				[/csharp]
 				[/codeblocks]