Fix spelling errors (#384)

aligment -> alignment
constructable -> constructible
constuctible -> constructible
contructed -> constructed
destructable -> destructible
futher -> further
implcit -> implicit
implemenation -> implementation
intrinics -> intrinsics

absl/base/attributes.h

@@ -157,7 +157,7 @@
 // Tags a function as weak for the purposes of compilation and linking.
 // Weak attributes currently do not work properly in LLVM's Windows backend,
 // so disable them there. See https://bugs.llvm.org/show_bug.cgi?id=37598
-// for futher information.
+// for further information.
 #if (ABSL_HAVE_ATTRIBUTE(weak) || \
      (defined(__GNUC__) && !defined(__clang__))) && \
     !(defined(__llvm__) && defined(_WIN32))

absl/base/internal/endian.h

@@ -113,7 +113,7 @@ inline uint16_t gbswap_16(uint16_t host_int) {
 #endif
 }
 
-#endif  // intrinics available
+#endif  // intrinsics available
 
 #ifdef ABSL_IS_LITTLE_ENDIAN