Fix spelling mistakes using codespell

This commit corrects various spelling mistakes throughout the
repository. The corrections were made automatically using `codespell`[1]
tool.

[1]: https://github.com/codespell-project/codespell

Change-Id: I965f52f9eae78bcad39a8d711f99bef7be4cbde0
Signed-off-by: Manojkiran Eda <manojkiran.eda@gmail.com>
diff --git a/yaml/xyz/openbmc_project/Software/Image.errors.yaml b/yaml/xyz/openbmc_project/Software/Image.errors.yaml
index c2fda85..ae1806e 100644
--- a/yaml/xyz/openbmc_project/Software/Image.errors.yaml
+++ b/yaml/xyz/openbmc_project/Software/Image.errors.yaml
@@ -5,6 +5,6 @@
 - name: InternalFailure
   description: The operation failed internally during processing the image.
 - name: ImageFailure
-  description: An error occured processing the image.
+  description: An error occurred processing the image.
 - name: BusyFailure
   description: The device is busy during the update.
diff --git a/yaml/xyz/openbmc_project/Software/README.md b/yaml/xyz/openbmc_project/Software/README.md
index 66ed4a3..8309acd 100644
--- a/yaml/xyz/openbmc_project/Software/README.md
+++ b/yaml/xyz/openbmc_project/Software/README.md
@@ -103,7 +103,7 @@
 have the same string in its `Inventory.Decorator.Compatible` interface. These
 strings shall be of the following format:
 
-- `<org>.Software.Element.<identifer>.Type.<type>`
+- `<org>.Software.Element.<identifier>.Type.<type>`
 
 Where:
 
diff --git a/yaml/xyz/openbmc_project/Software/Update.interface.yaml b/yaml/xyz/openbmc_project/Software/Update.interface.yaml
index 4191c1f..b2f11d1 100644
--- a/yaml/xyz/openbmc_project/Software/Update.interface.yaml
+++ b/yaml/xyz/openbmc_project/Software/Update.interface.yaml
@@ -1,10 +1,10 @@
 description: >
-    Interface for performing code update for various firwmare entities.
+    Interface for performing code update for various firmware entities.
 
 methods:
     - name: StartUpdate
       description: >
-          Start a firware update to be performed asynchronously.
+          Start a firmware update to be performed asynchronously.
       parameters:
           - name: Image
             type: unixfd