doc: minor fix for library/profile (GH-761)

diff --git a/Doc/library/profile.rst b/Doc/library/profile.rst
index bd67fe4..b4b1479 100644
--- a/Doc/library/profile.rst
+++ b/Doc/library/profile.rst
@@ -85,11 +85,11 @@
 far right column was used to sort the output. The column headings include:
 
 ncalls
-   for the number of calls,
+   for the number of calls.
 
 tottime
-    for the total time spent in the given function (and excluding time made in
-    calls to sub-functions)
+   for the total time spent in the given function (and excluding time made in
+   calls to sub-functions)
 
 percall
    is the quotient of ``tottime`` divided by ``ncalls``