Updated and fixed java resources (#2835)

* Fixed resource type

Fixed resource type from watch to read in 'Learn more about Data types and Variables'

* Updated java-fundamental resources

Replaced non-English resource with English one.
Added switch and nested conditional video resource

content/roadmaps/110-java/content/100-java-fundamentals/101-data-types-variables.md

@@ -9,4 +9,4 @@ Data Types are divided into two group -
 <ResourceGroupTitle>Free Content</ResourceGroupTitle>
 <BadgeLink colorScheme='yellow' badgeText='Read' href='https://www.guru99.com/java-variables.html'>What are Data Types & Variables?</BadgeLink>
 <BadgeLink colorScheme='yellow' badgeText='Read' href='https://www.javatpoint.com/java-variables'>Java Variables</BadgeLink>
-<BadgeLink badgeText='Watch' href='https://www.javatpoint.com/java-data-types'>Learn more about Data types and Variables</BadgeLink>
+<BadgeLink colorScheme='yellow' badgeText='Read' href='https://www.javatpoint.com/java-data-types'>Learn more about Data types and Variables</BadgeLink>

content/roadmaps/110-java/content/100-java-fundamentals/102-conditionals.md

@@ -11,4 +11,5 @@ Java has the following conditional statements:
 <ResourceGroupTitle>Free Content</ResourceGroupTitle>
 <BadgeLink colorScheme='yellow' badgeText='Read' href='https://www.educative.io/answers/what-are-conditional-statements-in-programming'>What are Conditional statements?</BadgeLink>
 <BadgeLink colorScheme='yellow' badgeText='Read' href='https://www.javatpoint.com/java-if-else'>Conditionals in Java</BadgeLink>
-<BadgeLink badgeText='Watch' href='https://www.youtube.com/watch?v=YPK6NYMJt_A'>Conditionals in Java</BadgeLink>
+<BadgeLink badgeText='Watch' href='https://youtu.be/ldYLYRNaucM'>Conditionals and Loops in Java</BadgeLink>
+<BadgeLink badgeText='Watch' href='https://youtu.be/mA23x39DjbI'>Switch Statements + Nested Case in Java</BadgeLink>