[Docs] Fixed a couple of typos in CONTRIBUTING (#63205)

Fixed a couple of typos in contribution guide.

(cherry picked from commit 71fcaa4)

Author: ayusheshan

CONTRIBUTING.md

@@ -126,7 +126,7 @@ specifically these lines tell you that Elasticsearch is ready:
     [2020-05-29T14:50:35,167][INFO ][o.e.h.AbstractHttpServerTransport] [runTask-0] publish_address {127.0.0.1:9200}, bound_addresses {[::1]:9200}, {127.0.0.1:9200}
     [2020-05-29T14:50:35,169][INFO ][o.e.n.Node               ] [runTask-0] started
 
-But to be honest its typically easier to wait until the console stopps scrolling
+But to be honest its typically easier to wait until the console stops scrolling
 and then run `curl` in another window like this:
 
     curl -u elastic:password localhost:9200
@@ -415,13 +415,13 @@ allows you to use these configurations arbitrarily. Here are some of the most
 common configurations in our build and how we use them:
 
 <dl>
-<dt>`implementation`</dt><dd>Dependencies that are used by the project 
+<dt>`implementation`</dt><dd>Dependencies that are used by the project
 at compile and runtime but are not exposed as a compile dependency to other dependent projects.
-Dependencies added to the `implementation` configuration are considered an implementation detail 
+Dependencies added to the `implementation` configuration are considered an implementation detail
 that can be changed at a later date without affecting any dependent projects.</dd>
-<dt>`api`</dt><dd>Dependencies that are used as compile and runtime depdendencies of a project
+<dt>`api`</dt><dd>Dependencies that are used as compile and runtime dependencies of a project
  and are considered part of the external api of the project.
-<dt>`runtimeOnly`</dt><dd>Dependencies that not on the classpath at compile time but 
+<dt>`runtimeOnly`</dt><dd>Dependencies that not on the classpath at compile time but
 are on the classpath at runtime. We mostly use this configuration to make sure that
 we do not accidentally compile against dependencies of our dependencies also
 known as "transitive" dependencies".</dd>