Fix typos in documentation

Author: per1234

README.md

@@ -146,5 +146,5 @@ Storing the sketches compilation report report as a [workflow artifact](https://
   uses: actions/upload-artifact@v1
   with:
     name: size-deltas-reports
-    path: size-delta-reports
+    path: size-deltas-reports
 ```

action.yml

@@ -1,8 +1,8 @@
 name: 'Compile Arduino Sketches'
-description: 'Compiles all the examples included in the library'
+description: 'Checks whether Arduino sketches will compile and produces a report of data from the compilations'
 inputs:
   cli-version:
-    description: 'Version of arduino-cli to use when builing'
+    description: 'Version of Arduino CLI to use when building'
     default: 'latest'
   fqbn:
     description: 'Full qualified board name, with Boards Manager URL if needed'
@@ -14,7 +14,7 @@ inputs:
     description: 'YAML-format list of platform dependencies to install'
     default: ''
   sketch-paths:
-    description: 'List of paths containing sketches to compile.'
+    description: 'YAML-format list of paths containing sketches to compile.'
     default: '- examples'
   verbose:
     description: 'Set to true to show verbose output in the log'
@@ -23,7 +23,7 @@ inputs:
     description: 'Path in which to save a JSON formatted file containing data from the sketch compilations'
     default: 'size-deltas-reports'
   github-token:
-    description: 'GitHub access token used to get information from the GitHub API. Only needed if you are using the size deltas report feature with a private repository.'
+    description: 'GitHub access token used to get information from the GitHub API. Only needed if you are using the deltas report feature in a private repository.'
     default: ''
   enable-deltas-report:
     description: 'Set to true to cause the action to determine the change in memory usage and compiler warnings of the compiled sketches between the head and base refs of a PR and the immediate parent commit of a push'