Update icon: opencl (original, plain, line) (devicons#2050)

* Update icon opencl

* Updated color

* Updated line svg to remove artifacts

* Update opencl-line.svg

* Update opencl-plain.svg

There was an almost invisible artifact on this one too.

---------

Co-authored-by: Josélio de S. C. Júnior <76992016+lunatic-fox@users.noreply.github.com>
Co-authored-by: Jørgen Kalsnes Hagen <43886029+Snailedlt@users.noreply.github.com>

devicon.json

@@ -7018,17 +7018,28 @@
         ],
         "versions": {
             "svg": [
-                "original"
+                "original",
+                "plain",
+                "line"
             ],
             "font": [
-                "original"
+                "plain",
+                "line"
             ]
         },
-        "color": "#010101",
+        "color": "#000",
         "aliases": [
             {
                 "base": "original",
-                "alias": "plain"
+                "alias": "original-wordmark"
+            },
+            {
+                "base": "plain",
+                "alias": "plain-wordmark"
+            },
+            {
+                "base": "line",
+                "alias": "line-wordmark"
             }
         ]
     },