fix(docs): Fix Broken links (#1942)

These links were broken in Plugins Page. Fixed them, will try to find more.

Author: nveenjain

src/content/api/plugins.md

@@ -10,7 +10,7 @@ contributors:
 
 Plugins are a key piece of the webpack ecosystem and provide the community with
 a powerful way to tap into webpack's compilation process. A plugin is able to
-[hook](/api/compiler/#event-hooks) into key events that are fired throughout each compilation. Every step
+[hook](/api/compiler-hooks/#hooks) into key events that are fired throughout each compilation. Every step
 of the way, the plugin will have full access to the `compiler` and, when
 applicable, the current `compilation`.
 
@@ -41,7 +41,7 @@ noted.
 Depending on the hooks used and `tap` methods applied, plugins can function in
 a different number of ways. The way this works is closely related to the
 [hooks](https://github.com/webpack/tapable#tapable) provided by `Tapable`. The
-[compiler hooks](/api/compiler/#event-hooks) each note the underlying `Tapable` hook indicating which
+[compiler hooks](/api/compiler-hooks/#hooks) each note the underlying `Tapable` hook indicating which
 `tap` methods are available.
 
 So depending which event you `tap` into, the plugin may run differently. For
@@ -96,5 +96,5 @@ different hook classes and how they work.
 
 ## Next Steps
 
-See the [compiler hooks](/api/compiler/#event-hooks) section for a detailed listing of all the available
+See the [compiler hooks](https://webpack.js.org/api/compiler-hooks/) section for a detailed listing of all the available
 `compiler` hooks and the parameters they make available.

src/content/api/resolvers.md

@@ -7,7 +7,7 @@ sort: 3
 Resolvers are created using the `enhanced-resolve` package. The `Resolver`
 class extends the `tapable` class and uses `tapable` to provide a few hooks.
 The `enhanced-resolve` package can be used directly to create new resolvers,
-however any [`compiler` instance](/api/compiler/) has a few resolver instances that can be
+however any [`compiler` instance](/api/node/#compiler-instance) has a few resolver instances that can be
 tapped into.
 
 Before reading on, make sure you at least skim through the

src/content/contribute/writing-a-plugin.md

@@ -13,7 +13,7 @@ A plugin for `webpack` consists of
 
 - A named JavaScript function.
 - Defines `apply` method in it's prototype.
-- Specifies an [event hook](/api/compiler/#event-hooks) on which to bind itself.
+- Specifies an [event hook](/api/compiler-hooks/) on which to bind itself.
 - Manipulates webpack internal instance specific data.
 - Invokes webpack provided callback after functionality is complete.