Fixed typos in the useragent.rst

docs/useragent.rst

@@ -22,7 +22,7 @@ recommends:
 
 For git repository builds, implementations are free to use the git commitish.
 However the issue lies in that it is not immediately obvious without the
-repository which version proceeds another. For this reason, we lightly
+repository which version preceeds another. For this reason, we lightly
 recommend dates in the format specified above, although this is by no means
 a requirement.
 
@@ -46,7 +46,7 @@ Reserved symbols are therefore: ``/ : ( )``
 They should not be misused beyond what is specified in this section.
 
 ``/``
-   seperates the code-stack
+   separates the code-stack
 ``:``
    specifies the implementation version of the particular stack
 ``( and )``