Update README.md

Fixed punctuation issues

README.md

@@ -27,8 +27,8 @@ The 1.13.x branch requires at least C++14.
 #### Continuous Integration
 
 We use Google's internal systems for continuous integration. \
-GitHub Actions were added for the convenience of open source contributors. They
-are exclusively maintained by the open source community and not used by the
+GitHub Actions were added for the convenience of open-source contributors. They
+are exclusively maintained by the open-source community and not used by the
 GoogleTest team.
 
 #### Coming Soon
@@ -83,7 +83,7 @@ More information about building GoogleTest can be found at
     data types
 *   Various options for running tests: \
     Googletest provides many options for running tests including running
-    individual tests, running tests in a specific order, and running tests in
+    individual tests, running tests in a specific order and running tests in
     parallel
 
 ## Supported Platforms
@@ -92,7 +92,7 @@ GoogleTest follows Google's
 [Foundational C++ Support Policy](https://opensource.google/documentation/policies/cplusplus-support).
 See
 [this table](https://github.com/google/oss-policies-info/blob/main/foundational-cxx-support-matrix.md)
-for a list of currently supported versions compilers, platforms, and build
+for a list of currently supported versions of compilers, platforms, and build
 tools.
 
 ## Who Is Using GoogleTest?