Fix typos in comments (#4819)

Summary:
Fix some typos in comments.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4819

Differential Revision: D13548543

Pulled By: siying

fbshipit-source-id: ca2e128fa47bef32892fc3627a7541fd9e2d5c3f

include/rocksdb/rate_limiter.h

@@ -81,11 +81,11 @@ class RateLimiter {
   // Max bytes can be granted in a single burst
   virtual int64_t GetSingleBurstBytes() const = 0;
 
-  // Total bytes that go though rate limiter
+  // Total bytes that go through rate limiter
   virtual int64_t GetTotalBytesThrough(
       const Env::IOPriority pri = Env::IO_TOTAL) const = 0;
 
-  // Total # of requests that go though rate limiter
+  // Total # of requests that go through rate limiter
   virtual int64_t GetTotalRequests(
       const Env::IOPriority pri = Env::IO_TOTAL) const = 0;
 

java/src/main/java/org/rocksdb/RateLimiter.java

@@ -193,9 +193,9 @@ public class RateLimiter extends RocksObject {
   }
 
   /**
-   * <p>Total bytes that go though rate limiter.</p>
+   * <p>Total bytes that go through rate limiter.</p>
    *
-   * @return total bytes that go though rate limiter.
+   * @return total bytes that go through rate limiter.
    */
   public long getTotalBytesThrough() {
     assert(isOwningHandle());
@@ -203,9 +203,9 @@ public class RateLimiter extends RocksObject {
   }
 
   /**
-   * <p>Total # of requests that go though rate limiter.</p>
+   * <p>Total # of requests that go through rate limiter.</p>
    *
-   * @return total # of requests that go though rate limiter.
+   * @return total # of requests that go through rate limiter.
    */
   public long getTotalRequests() {
     assert(isOwningHandle());