Fix a broken link in documentation and exclude an invalid link (#1811)

Author: seisman

.github/workflows/check-links.yml

@@ -41,6 +41,7 @@ jobs:
           --exclude "^file://"
           --exclude "^https://docs.generic-mapping-tools.org/latest/%s$"
           --exclude "^https://docs.generic-mapping-tools.org/latest/%3Cmodule-name%3E.html$"
+          --exclude "^https://www.generic-mapping-tools.org/remote-datasets/%s$"
           --exclude "https://hackmd.io/@pygmt"
           --verbose
           "repository/**/*.rst"

pygmt/datasets/earth_age.py

@@ -26,7 +26,7 @@ def load_earth_age(resolution="01d", region=None, registration=None):
     registration type (**p** for pixel registration or **g** for gridline
     registration).
 
-    Refer to :gmt-datasets:`earth_age.html` for more details.
+    Refer to :gmt-datasets:`earth-age.html` for more details.
 
     Parameters
     ----------