Fix various typos (#7374)

* Fix typo: commnd -> command

* Fix typo: ommissions -> omissions

* Fix typo: survery -> survey

* Fix typo: obersvation -> observation

* Fix typo: obersvation -> observation

* Fix typos: Normaliztion -> Normalization, add missing space

* Fix typos: aicraft -> aircraft, exclud -> exclude

* Fix typo: informations -> information

* Fix typos: Miscellanous, excpet, accesories, similiar

* Fix typo: ommissions -> omissions

* Fix typo: aggreated -> aggregated

* Fix typo: foward_pe -> forward_pe

* Fix typo: contiunation -> continuation

* Fix typo: deferrred -> deferred

* Fix typo: daa -> date

* Fix typo: Activites -> Activities

* Fix typo: Activites -> Activities

* Fix typo: Recieved -> Received

* Fix typo: acquistion -> acquisition

* Fix typos: developement -> development

* Fix typo: obersvation -> observation

* Fix typo: Governement -> Government

* Fix typo: anaylsts -> analysts

* Fix typo: signapore -> singapore

* Fix typo: signapore -> singapore

* Fix typo: decalaration -> declaration

* Fix typo: Phramaceutical -> Pharmaceutical

* Revert changes to ec_codes.json

* Revert changes to ppi_codes.json

* Fix exchange_date alias to use daa

* fix linter error

Signed-off-by: luojiyin <luojiyin@hotmail.com>

---------

Signed-off-by: luojiyin <luojiyin@hotmail.com>
Co-authored-by: Danglewood <85772166+deeleeramone@users.noreply.github.com>

openbb_platform/extensions/platform_api/tests/mock_openapi.json

@@ -4225,7 +4225,7 @@
               }
             ],
             "title": "Value",
-            "description": "The obersvation value. The units are defined in the search results by series ID."
+            "description": "The observation value. The units are defined in the search results by series ID."
           },
           "series_id": {
             "type": "string",

openbb_platform/extensions/platform_api/tests/mock_widgets.json

@@ -2944,7 +2944,7 @@
                         "field": "value",
                         "formatterFn": null,
                         "headerName": "Value",
-                        "headerTooltip": "The obersvation value. The units are defined in the search results by series ID.",
+                        "headerTooltip": "The observation value. The units are defined in the search results by series ID.",
                         "cellDataType": "number"
                     },
                     {