update HISTORY.md for 8.0.0

Summary:
I couldn't figure out why this causes failures in our 8.0 release to fbcode while this issue appears to not be new in 8.0. Anyways, we can add the missing `override` keywords to these functions as the compiler insists.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/11232

Reviewed By: pdillinger

Differential Revision: D43420656

Pulled By: ajkr

fbshipit-source-id: da748eeef6ba38dd113dbe4b5143d7558daf38dd

HISTORY.md

@@ -1,6 +1,5 @@
 # Rocksdb Change Log
-## Unreleased
-
+## 8.0.0 (02/19/2023)
 ### Behavior changes
 * `ReadOptions::verify_checksums=false` disables checksum verification for more reads of non-`CacheEntryRole::kDataBlock` blocks.
 * In case of scan with async_io enabled, if posix doesn't support IOUring, Status::NotSupported error will be returned to the users. Initially that error was swallowed and reads were switched to synchronous reads.

port/win/env_win.h

@@ -97,7 +97,7 @@ class WinClock : public SystemClock {
 
   Status GetCurrentTime(int64_t* unix_time) override;
   // Converts seconds-since-Jan-01-1970 to a printable string
-  virtual std::string TimeToString(uint64_t time);
+  std::string TimeToString(uint64_t time) override;
 
   uint64_t GetPerfCounterFrequency() const { return perf_counter_frequency_; }
 
@@ -116,7 +116,7 @@ class WinFileSystem : public FileSystem {
   ~WinFileSystem() {}
   static const char* kClassName() { return "WinFS"; }
   const char* Name() const override { return kClassName(); }
-  const char* NickName() const { return kDefaultName(); }
+  const char* NickName() const override { return kDefaultName(); }
 
   static size_t GetSectorSize(const std::string& fname);
   size_t GetPageSize() const { return page_size_; }