chore: update the year of copyright and fix typo (#2417)

* fix typo
* Update copyright year

Co-authored-by: Bisakh <bisakhmondal00@gmail.com>
diff --git a/web/src/components/Footer/index.tsx b/web/src/components/Footer/index.tsx
index f6079b0..1537678 100644
--- a/web/src/components/Footer/index.tsx
+++ b/web/src/components/Footer/index.tsx
@@ -20,7 +20,7 @@
 
 export default () => (
   <DefaultFooter
-    copyright="2021 Apache APISIX"
+    copyright={`${new Date().getFullYear()} Apache APISIX`}
     links={[
       {
         key: 'GitHub',
diff --git a/web/src/components/PluginFlow/locales/en-US.ts b/web/src/components/PluginFlow/locales/en-US.ts
index 4e5c8f2..72a9f73 100644
--- a/web/src/components/PluginFlow/locales/en-US.ts
+++ b/web/src/components/PluginFlow/locales/en-US.ts
@@ -20,7 +20,7 @@
   'component.plugin-flow.text.condition2': 'Condition',
   'component.plugin-flow.text.condition.placeholder': 'Please enter the rule',
   'component.plugin-flow.text.without-data': 'Found node without configuration',
-  'component.plugin-flow.text.plugin-without-data.description': 'Please condigure plugin: ',
+  'component.plugin-flow.text.plugin-without-data.description': 'Please configure plugin: ',
   'component.plugin-flow.text.no-start-node': 'Please connect the start node',
   'component.plugin-flow.text.no-root-node': 'Root node not found',
   'component.plugin-flow.text.start-node': 'Start',
diff --git a/web/src/components/Upstream/locales/en-US.ts b/web/src/components/Upstream/locales/en-US.ts
index 8dcf67b..0d82232 100644
--- a/web/src/components/Upstream/locales/en-US.ts
+++ b/web/src/components/Upstream/locales/en-US.ts
@@ -135,7 +135,7 @@
   'component.upstream.fields.checks.active.unhealthy.interval.tooltip':
     'Interval between active health checks for unhealthy targets (in seconds). A value of zero indicates that active probes for healthy targets should not be performed.',
   'component.upstream.fields.checks.active.unhealthy.required':
-    'Please enter the unhelthy interval',
+    'Please enter the unhealthy interval',
 
   'component.upstream.fields.checks.passive.healthy.successes': 'Successes',
   'component.upstream.fields.checks.passive.healthy.successes.tooltip':