Fix some typos (#3211)

Author: yvonnefroehlich

.github/dependabot.yml

@@ -6,7 +6,7 @@ updates:
   - package-ecosystem: "github-actions"
     directory: "/"
     schedule:
-      # Check for updates to GitHub Actions every weekday
+      # Check for updates to GitHub Actions on Tuesdays
       interval: "weekly"
       day: "tuesday"
     # Allow up to 2 open pull requests at a time

.github/workflows/ci_docs.yml

@@ -158,7 +158,7 @@ jobs:
           # to get the right commit hash.
           message="Deploy $version from $(git rev-parse --short HEAD)"
           cd deploy
-          # Need to have this file so that Github doesn't try to run Jekyll
+          # Need to have this file so that GitHub doesn't try to run Jekyll
           touch .nojekyll
           # Delete all the files and replace with our new  set
           echo -e "\nRemoving old files from previous builds of ${version}:"

doc/changes.md

@@ -858,7 +858,7 @@
 * Improve the DVC image diff workflow to support side-by-side comparison of modified images ([#1219](https://github.com/GenericMappingTools/pygmt/pull/1219))
 * Document the deprecation policy and add the deprecate_parameter decorator to deprecate parameters ([#1160](https://github.com/GenericMappingTools/pygmt/pull/1160))
 * Convert booleans arguments in build_arg_string, not in kwargs_to_strings ([#1125](https://github.com/GenericMappingTools/pygmt/pull/1125))
-* Create Github Action workflow for reporting DVC image diffs ([#1104](https://github.com/GenericMappingTools/pygmt/pull/1104))
+* Create GitHub Action workflow for reporting DVC image diffs ([#1104](https://github.com/GenericMappingTools/pygmt/pull/1104))
 * Update "GMT Dev Tests" workflow to test macOS-11.0 and pre-release Python packages ([#1105](https://github.com/GenericMappingTools/pygmt/pull/1105))
 * Initialize data version control for managing test images ([#1036](https://github.com/GenericMappingTools/pygmt/pull/1036))
 * Separate workflows for running tests and building documentation ([#1033](https://github.com/GenericMappingTools/pygmt/pull/1033))

doc/contributing.md

@@ -664,7 +664,7 @@ summarized as follows:
     mv baseline/*.png pygmt/tests/baseline/
 
     # Generate hash for baseline image and stage the *.dvc file in git
-    dvc status  # check which files need to be added to dvc
+    dvc status  # Check which files need to be added to dvc
     dvc add pygmt/tests/baseline/test_logo.png
     git add pygmt/tests/baseline/test_logo.png.dvc
 

pygmt/datatypes/dataset.py

@@ -161,7 +161,7 @@ def to_strings(self) -> np.ndarray[Any, np.dtype[np.str_]]:
             # Workaround for upstream GMT bug reported in
             # https://github.com/GenericMappingTools/pygmt/issues/3170.
             msg = (
-                "The trailing text column contains `None' values and has been replaced"
+                "The trailing text column contains 'None' values and has been replaced "
                 "with empty strings to avoid TypeError exceptions. "
                 "It's likely caused by an upstream GMT API bug. "
                 "Please consider reporting to us."