Fix a typo

I have no idea what DLP here means, but ULP make sense.
Assuming DLP is a typo of ULP.

PiperOrigin-RevId: 739113596
Change-Id: Ib8c66d54d95e3b015c79af1285b7008c91b8502e

Author: oToToT

googletest/include/gtest/internal/gtest-internal.h

@@ -332,7 +332,7 @@ class FloatingPoint {
   //
   //   - returns false if either number is (or both are) NAN.
   //   - treats really large numbers as almost equal to infinity.
-  //   - thinks +0.0 and -0.0 are 0 DLP's apart.
+  //   - thinks +0.0 and -0.0 are 0 ULP's apart.
   bool AlmostEquals(const FloatingPoint& rhs) const {
     // The IEEE standard says that any comparison operation involving
     // a NAN must return false.