grammar fixes

Signed-off-by: Eran Ifrah <eifrah@amazon.com>

README.md

@@ -334,11 +334,11 @@ make VERBOSE=1
 ## Troubleshooting
 
 During the `CMake` stage, `CMake` caches variables in a local file named `CMakeCache.txt`. All variables generated by Valkey
-are removed from the cache once consumed (this is done by calling to `unset(VAR-NAME CACHE)`. However. some variables,
-like the compiler path, are kept in that cache. To start a fresh build either remove the cache file `CMakeCache.txt` or delete the
-entire build folder
+are removed from the cache once consumed (this is done by calling to `unset(VAR-NAME CACHE)`). However, some variables,
+like the compiler path, are kept in cache. To start a fresh build either remove the cache file `CMakeCache.txt` from the
+build folder, or delete the build folder completely.
 
-It is important to re-run `CMake` when adding new source files.
+**It is important to re-run `CMake` when adding new source files.**
 
 ## Integration with IDE