Editorial changes for Optical

Author: m-mohr

optical.md

@@ -1,4 +1,4 @@
-# CEOS-ARD for Optical data <!-- omit in toc -->
+# CEOS-ARD for Optical <!-- omit in toc -->
 
 - **Title:** CEOS-ARD for Optical
 - **Identifier:**
@@ -109,7 +109,7 @@ only additional requirements and mappings to fulfill the CEOS-ARD requirements a
 
 | Field Name      | Req.  | Description |
 | --------------- | ----- | ----------- |
-| stac_extensions | *n/a* | **REQUIRED.** Must contain [all STAC extensions](#stac-extensions) implemented. |
+| stac_extensions | *n/a* | **REQUIRED.** Must contain [all implemented STAC extensions](#stac-extensions). |
 | geometry        | 1.4   | **REQUIRED.** The geometry of the acquisition. |
 | bbox            | 1.4   | **REQUIRED.** The bounding box of the acquisition. |
 
@@ -388,7 +388,7 @@ All links can be provided either in the Collection or in the Item,
 unless the links are specific for each Item and/or differ between the Items.
 If that's the case, they must be provided per Item.
 
-In addition to the links defined in specific extensions above, the relation types may listed in the table below can be used.
+In addition to the links defined in specific extensions above, the relation types listed in the table below can be used.
 
 | Relation Type | Req.      | Description |
 | ------------- | --------- | ----------- |