Fix doctest

seisman · seisman · commit 0bb5788a5233 · 2023-06-24T22:15:15.000+08:00
diff --git a/pygmt/src/meca.py b/pygmt/src/meca.py
@@ -117,9 +117,9 @@ def convention_name(code):
     Examples
     --------
     >>> convention_name("a")
-    "aki"
+    'aki'
     >>> convention_name("aki")
-    "aki"
+    'aki'
     """
     name = {
         "a": "aki",
