docs: fix typos (#330)

Found via `codespell -L juli`

pypandoc/__init__.py

@@ -704,7 +704,7 @@ def _ensure_pandoc_path() -> None:
             except Exception:
                 # we can't use that path...
                 if os.path.exists(path):
-                    # path exist but is not useable -> not executable?
+                    # path exist but is not usable -> not executable?
                     log_msg = ("Found {}, but not using it because of an "
                                "error:".format(path))
                     logger.exception(log_msg)

pypandoc/pandoc_download.py

@@ -39,7 +39,7 @@ def _get_pandoc_urls(version="latest"):
     :return: str pandoc_urls: a dictionary with keys as system platform
         and values as the url pointing to respective binaries
 
-    :return: str version: actual pandoc version. (e.g. "lastest" will be resolved to the actual one)
+    :return: str version: actual pandoc version. (e.g. "latest" will be resolved to the actual one)
     """
     # url to pandoc download page
     url = "https://github.com/jgm/pandoc/releases/" + \
@@ -78,7 +78,7 @@ def _get_pandoc_urls(version="latest"):
 def _make_executable(path):
     mode = os.stat(path).st_mode
     mode |= (mode & 0o444) >> 2  # copy R bits to X
-    logger.info(f"Making {path} executeable...")
+    logger.info(f"Making {path} executable...")
     os.chmod(path, mode)
 
 

tests.py

@@ -574,9 +574,9 @@ def f():
         # no extensions allowed
         with closed_tempfile('.pdf') as file_name:
             def f():
-                pypandoc.convert_text('# some title\n', to='pdf+somethign', format='md', outputfile=file_name)
+                pypandoc.convert_text('# some title\n', to='pdf+something', format='md', outputfile=file_name)
 
-            with self.assertRaisesRegex(RuntimeError, r"PDF output can't contain any extensions: pdf\+somethign"):
+            with self.assertRaisesRegex(RuntimeError, r"PDF output can't contain any extensions: pdf\+something"):
                 f()
 
     def test_get_pandoc_path(self):