Merge pull request #821 from nxadm/master

Choose beter constant examples (pi is alreay a builtin term)

Author: nxadm

doc/Language/terms.pod6

@@ -174,6 +174,8 @@ Variables are discussed in the L<variable language docs |/language/variables>.
 X<|constant (Terms)>
 Constants are declared with C<constant> and do not require a sigil. The RHS is evaluated at compile time, what may be too early to make sense.
 
-    constant Pi = 3.123; # if you happen to be Babylonian
+    constant SpeedOfLight = 299792458     # m/s
+    constant PHI          = 1.61803398875 # The golden ratio is everywhere!
+
 
 =end pod