fix typos in benchmarks/README.md

benchmarks/README.md

@@ -16,7 +16,7 @@ build your language's protobuf, then:
 You need to install [cmake](https://cmake.org/) before building the benchmark.
 
 We are using [google/benchmark](https://github.com/google/benchmark) as the
-benchmark tool for testing cpp. This will be automaticly made during build the
+benchmark tool for testing cpp. This will be automatically made during build the
 cpp benchmark.
 
 The cpp protobuf performance can be improved by linking with [tcmalloc library](
@@ -28,7 +28,7 @@ libtcmallc.so library.
 We're using maven to build the java benchmarks, which is the same as to build
 the Java protobuf. There're no other tools need to install. We're using
 [google/caliper](https://github.com/google/caliper) as benchmark tool, which
-can be automaticly included by maven.
+can be automatically included by maven.
 
 ### Python
 We're using python C++ API for testing the generated
@@ -59,7 +59,7 @@ The first command installs `protoc-gen-go` into the `bin` directory in your loca
 The second command adds the `bin` directory to your `PATH` so that `protoc` can locate the plugin later.
 
 ### PHP
-PHP benchmark's requirement is the same as PHP protobuf's requirements. The benchmark will automaticly
+PHP benchmark's requirement is the same as PHP protobuf's requirements. The benchmark will automatically
 include PHP protobuf's src and build the c extension if required.
 
 ### Node.js