doc: Clarify that 3.4.5 matches >1.2.3-alpha.7

For @Raynos

README.md

@@ -84,7 +84,9 @@ For example, the range `>1.2.3-alpha.3` would be allowed to match the
 version `1.2.3-alpha.7`, but it would *not* be satisfied by
 `3.4.5-alpha.9`, even though `3.4.5-alpha.9` is technically "greater
 than" `1.2.3-alpha.3` according to the SemVer sort rules.  The version
-range only accepts prerelease tags on the `1.2.3` version.
+range only accepts prerelease tags on the `1.2.3` version.  The
+version `3.4.5` *would* satisfy the range, because it does not have a
+prerelease flag, and `3.4.5` is greater than `1.2.3-alpha.7`.
 
 The purpose for this behavior is twofold.  First, prerelease versions
 frequently are updated very quickly, and contain many breaking changes