docs: correct typos after review

Co-authored-by: Edward Zarecor <[email protected]>

Author: GlugovGrGlib

docs/decisions/0007-verifiable-credentials-issuing.rst

@@ -60,7 +60,7 @@ These backends can be used to:
 * build JSON-LD documents based on several VC based standards, e.g., `Verifiable Credentials Data Model v1.1`_,
   `Open Badges v3.0`_, `EBSI Verifiable Credentials`_;
 
-* implement integrations with different verifiable credentials singing services, such as `SpruceID's didkit-python`_, `DCC's sign-and-verify`_, and other open-source and proprietary solutions.
+* implement integrations with different verifiable credentials signing services, such as `SpruceID's didkit-python`_, `DCC's sign-and-verify`_, and other open-source and proprietary solutions.
 
 * issue credentials directly to different mobile and web digital credentials wallets, such as `DCC's Learner Credentials Wallet (LCW)`_,
   and `MATTR wallet`_
@@ -71,7 +71,7 @@ In addition to the new application, it was decided to implement three initial ba
 
 * issue verifiable credentials directly to `DCC's Learner Credentials Wallet (LCW)`_;
 
-* sing verifiable credentials with the library `didkit-python`_, the python bindings for the open-source Rust-based `DIDKit`_ library maintained by SpruceID.
+* sign verifiable credentials with the library `didkit-python`_, the python bindings for the open-source Rust-based `DIDKit`_ library maintained by SpruceID.
 
 We want to focus on the implementation of issuing the program certificates in the form of verifiable credentials,
 and eventually support other credentials types that are available in the Credentials Service as well.