wiggle: fix a couple of typos in lib.rs docs

crates/wiggle/src/lib.rs

@@ -259,7 +259,7 @@ impl<'a, T: ?Sized + Pointee> GuestPtr<'a, T> {
     /// Creates a new `GuestPtr` from the given `mem` and `pointer` values.
     ///
     /// Note that for sized types like `u32`, `GuestPtr<T>`, etc, the `pointer`
-    /// vlue is a `u32` offset into guest memory. For slices and strings,
+    /// value is a `u32` offset into guest memory. For slices and strings,
     /// `pointer` is a `(u32, u32)` offset/length pair.
     pub fn new(mem: &'a (dyn GuestMemory + 'a), pointer: T::Pointer) -> GuestPtr<'a, T> {
         GuestPtr {
@@ -488,7 +488,7 @@ impl<'a> GuestPtr<'a, str> {
         self.pointer.0
     }
 
-    /// Returns the length, in bytes, of th estring.
+    /// Returns the length, in bytes, of the string.
     pub fn len(&self) -> u32 {
         self.pointer.1
     }