Update feature-specification.md

accepted/future-releases/triple-shift-operator/feature-specification.md

@@ -24,16 +24,16 @@ defined as:
 /// Performs a *logical shift* down of the bits representing this number,
 /// which shifts *out* the low [count] bits, shifts the remaining (if any)
 /// bits *down* to the least significant bit positions,
-/// and shifts *in* zeros as the most signficant bits.
+/// and shifts *in* zeros as the most significant bits.
 /// This differs from [operator >>] which shifts in copies of the most
-/// signficant bit as the new most significant bits.
+/// significant bit as the new most significant bits.
 ///
 /// The [count] must be non-negative. If [count] is greater than or equal to
 /// the number of bits in the representation of the integer, the result is
 /// always zero (all bits shifted out).
 /// If [count] is greater than zero, the result is always positive.
 ///
-/// For a *non-negative* integes `n` and `k`,
+/// For a *non-negative* integers `n` and `k`,
 /// `n >>> k` is equivalent to truncating division of `n` by 2<sup>k</sup>,
 /// or `n ~/ (1 << k)`.
 int operator >>>(int count);