fix: fix typos and minor text inconsistencies (#892)

Co-authored-by: Darshan Thakare <143271270+DarshanCode2005@users.noreply.github.com>
Co-authored-by: V Thulisile Sibanda <66913810+thulieblack@users.noreply.github.com>

Author: DarshanCode2005

config/agenda.json

@@ -255,7 +255,7 @@
     "time": "15:40 PM UTC - 15:45 PM UTC",
     "session": "My First AsyncAPI Pull Request",
     "speaker": 33,
-    "type": "Lightining Talk",
+    "type": "Lightning Talk",
      "city": "Online"
 },
 {

config/city-lists.json

@@ -156,7 +156,7 @@
   {
     "name": "California",
     "country": "USA",
-    "date": "18-20, Feburary 2026",
+    "date": "18-20, February 2026",
     "cfpDate": "21 November, 2025",
     "description": "Join the AsyncAPI Summit as an integral part of DeveloperWeek 2026.",
     "img": "/img/locations/san-jose.webp",

config/speakers.json

@@ -113,7 +113,7 @@
   },
   {
     "name": "Garima Srivastava",
-    "title": "Chief Development Architect at SAP Labs India ",
+    "title": "Chief Development Architect at SAP Labs India",
     "img": "/img/speaker-images/bangalore/Garima.webp",
     "id": 17,
     "city": ["Bangalore"]
@@ -190,7 +190,7 @@
   },  
   {
     "name": "Nkeiruka Ifeonu",
-    "title": "Lead Product Designer atonehealthng.com",
+    "title": "Lead Product Designer at onehealthng.com",
     "img": "/img/speaker-images/online-conf/Nkeiruka.webp",
     "id": 29,
     "city": ["Online"]