Bug 1640532 - docs - fix some typos DONTBUILD r=webdriver-reviewers,whimboo

Depends on D76636

Differential Revision: https://phabricator.services.mozilla.com/D76637

testing/geckodriver/doc/Notarization.md

@@ -13,7 +13,7 @@ progress in [bug 1588081].
 
 There are some mitigating circumstances:
 
-  * Vertification problems only occur when other notarized programs,
+  * Verification problems only occur when other notarized programs,
     such as a web browser, downloads the software from the internet.
 
   * Arbitrary software downloaded through other means, such as

testing/mozbase/docs/mozproxy.rst

@@ -45,5 +45,5 @@ Supported environment variables:
 - **MOZPROXY_DIR**: directory used by mozproxy for all data files, set by mozproxy
 - **MOZ_UPLOAD_DIR**: upload directory path
 - **GECKO_HEAD_REPOSITORY**: used to find the certutils binary path from the CI
-- **GECKO_HEAD_REV**: used to find the certutils binary path frmo the CI
+- **GECKO_HEAD_REV**: used to find the certutils binary path from the CI
 - **HOSTUTILS_MANIFEST_PATH**: used to find the certutils binary path from the CI

tools/lint/perfdocs/gatherer.py

@@ -44,7 +44,7 @@ class Gatherer(object):
 
         :return dict: The perfdocs tree containing all
             framework perfdoc entries. See `fetch_perfdocs_tree`
-            for information on the data strcture.
+            for information on the data structure.
         '''
         if self._perfdocs_tree:
             return self._perfdocs_tree