doc: update Git .mailmap

* can't have more than one proper and one to-be-corrected address per line
* can remap author name as well as email address

.mailmap

@@ -8,13 +8,15 @@ Dalmais Maxence <[email protected]>
 David Beitey <[email protected]>
 Domenic Denicola <[email protected]>
 Einar Otto Stangvik <[email protected]>
-Evan Lucas <[email protected]> <[email protected]> <[email protected]>
+Evan Lucas <[email protected]> <[email protected]>
+Evan Lucas <[email protected]> <[email protected]>
 Faiq Raza <[email protected]>
 Forbes Lindesay <[email protected]>
-Forrest L. Norvell <[email protected]> <[email protected]>
+Forrest L Norvell <[email protected]> <[email protected]>
 Gabriel Barros <[email protected]>
 Geoff Flarity <[email protected]> <gflarity@raptvm-x02.(none)>
 Isaac Z. Schlueter <[email protected]> <[email protected]>
+Isaac Z. Schlueter <[email protected]> isaacs <[email protected]>
 Jake Verbaten <[email protected]>
 James Sanders <[email protected]>
 Jason Smith <[email protected]>
@@ -28,4 +30,4 @@ Nicolas Morel <[email protected]>
 Olivier Melcher <[email protected]>
 Visnu Pitiyanuvath <[email protected]>
 Will Elwood <[email protected]>
-Zeke Sikelianos <[email protected]>
+Zeke Sikelianos <[email protected]>