[ci]: check for typos via codespell (#326)

also fix any found issues.

Reviewed-on: https://codeberg.org/nsxiv/nsxiv/pulls/326
Reviewed-by: Berke Kocaoğlu <berke.kocaoglu@metu.edu.tr>

.woodpecker/spell.yml

@@ -0,0 +1,11 @@
+branches: master
+
+# NOTE: codespell not available on stable alpine, use edge
+pipeline:
+  spell-check:
+    image: alpine:edge
+    commands: |
+      apk add --no-cache -X http://dl-cdn.alpinelinux.org/alpine/edge/testing py3-codespell >/dev/null
+      find . \( -name '*.patch' -o -name '*.diff' -o -name '*.md' \) -print | \
+        xargs -I{} codespell {}
+      codespell nsxiv.1 config.mk Makefile

CHANGELOG.md

@@ -96,12 +96,12 @@ be reached via `https://codeberg.org/nsxiv/nsxiv/pulls/ID`.
   * New mouse-binding <kbd>Ctrl-Button1</kbd> for relative drag. (#117)
   * Ability to configure colors and fonts in `config.h`. (#115)
   * Ability to configure navigation width area in `config.h`. (#155)
-  * Ability to customize the set of modifers used when processing keybindings
+  * Ability to customize the set of modifiers used when processing keybindings
     in `config.h` via `USED_MODMASK`. (#150)
   * Ability to configure Imlib2's cache size for better image (re)loading
     performance in `config.h`. (#171)
   * Cli flag `-0` for sending null-seperated file-list to standard out (`-o`),
-    and key-handler and recieving null-seperated file-list via stdin (`-i`).
+    and key-handler and receiving null-seperated file-list via stdin (`-i`).
     (#68) (#141) (#164)
   * Export environment variable `NSXIV_USING_NULL` to key-handler. (#164)
   * Embed new nsxiv icon. (#163)