Typo fixes

Doc/library/hotshot.rst

@@ -18,12 +18,12 @@ in C, it should result in a much smaller performance impact than the existing
 .. note::
 
    The :mod:`hotshot` module focuses on minimizing the overhead while profiling, at
-   the expense of long data post-processing times. For common usages it is
+   the expense of long data post-processing times. For common usage it is
    recommended to use :mod:`cProfile` instead. :mod:`hotshot` is not maintained and
    might be removed from the standard library in the future.
 
 .. versionchanged:: 2.5
-   the results should be more meaningful than in the past: the timing core
+   The results should be more meaningful than in the past: the timing core
    contained a critical bug.
 
 .. warning::