fix: remove unused string, rename string

src/app/components/contact-list/contact-list.html

@@ -1,10 +1,10 @@
 <div class="contact-list">
     <div class="contact-list__container">
-        <h2>{{strings.constacts|upperfirst}}</h2>
+        <h2>{{strings.contacts|upperfirst}}</h2>
         <app-contact-search-bar (contactSearch)="filter=$event"/>
         <app-counter 
             [count]="(this.contacts$|async)?.length ?? 0"
-            item="{{strings.constacts}}"
+            item="{{strings.contacts}}"
         />
         <app-contact-list-table [contactList]="(this.contacts$|async)|contactsFilter:filter"/>
     </div>

src/app/strings.ts

@@ -4,7 +4,7 @@ export const strings = Object.freeze({
   addContact: 'add a contact',
   allFieldRequired: 'all fields are required',
   company: 'company',
-  constacts: 'contacts',
+  contacts: 'contacts',
   contactsName: "Contact's name",
   contactsCompany: "Contact's company",
   contactsPhone: "Contact's phone",
@@ -12,7 +12,6 @@ export const strings = Object.freeze({
   editContact: 'edit contact',
   editTheContact: 'edit the contact',
   errorMessageMaxLength: (maxLen: number) => `Must be ${maxLen} characters or fewer.`,
-  errorMessageMinLength: (minLen: number) => `Must be at least ${minLen} characters long.`,
   errorMessagePhonePattern: `Valid format: + (optional) plus 12 to 15 digits`,
   errorMessageRequired: 'This field is required.',
   name: 'name',