std: fix a bunch of typos

The majority of these are in comments, some in doc comments which might
affect the generated documentation, and a few in parameter names -
nothing that should be breaking, however.

lib/std/hash_map.zig

@@ -690,7 +690,7 @@ pub fn HashMap(
 /// It achieves good performance with quite high load factors (by default,
 /// grow is triggered at 80% full) and only one byte of overhead per element.
 /// The struct itself is only 16 bytes for a small footprint. This comes at
-/// the price of handling size with u32, which should be reasonnable enough
+/// the price of handling size with u32, which should be reasonable enough
 /// for almost all uses.
 /// Deletions are achieved with tombstones.
 pub fn HashMapUnmanaged(