fix(5): fix broken links (#242)

some links are not supported by the new site-generator, and
should be corrected regardless.

Author: toumorokoshi

aep/general/0005/aep.md.j2

@@ -68,9 +68,9 @@ See the following AEPs to learn more about resource-oriented design:
 - [resource paths][AEP-122]
 - [resource types][AEP-4]
 
-[aep-121]: ./0121.md
-[aep-122]: ./0122.md
-[aep-4]: ./0004.md
+[aep-121]: /0121
+[aep-122]: /0122
+[aep-4]: /0004
 
 ## Identify standard operations
 
@@ -88,11 +88,11 @@ See the following AEPs to learn more about the standard methods:
 - [Update][AEP-134]
 - [Delete][AEP-135]
 
-[aep-131]: ./0131.md
-[aep-132]: ./0132.md
-[aep-133]: ./0133.md
-[aep-134]: ./0134.md
-[aep-135]: ./0135.md
+[aep-131]: /0131
+[aep-132]: /0132
+[aep-133]: /0133
+[aep-134]: /0134
+[aep-135]: ./0135
 
 
 ## Identify custom operations