fix changelog typos

CHANGELOG.md

@@ -8,7 +8,7 @@ This release cycle we decided to give people a chance to try our forms app and p
 
 We are still accepting feedback concerning our Form application via [a form hosted on CryptPad.fr](https://cryptpad.fr/form/#/2/form/view/gYs4QS7DetInCXy0z2CQoUW6CwN6kaR2utGsftDzp58/). We will accept feedback here until July 12th, 2021, so if you'd like your opinions to be represented in the app's second round of development act quickly!
 
-Following our last release we sent out an email to the admins of each outdated instance that had included their addresses in the server's daily telemetry. This appears to have been successful, as more than half of the 700+ instances that provide this telemetry are now running **4.7.0**. Previously, only 15% of instances were running the latest version. It's worth noting that of those admins that are hosting the latest version, less than 10% have opted into future emails warning them of security issues. In case you missed it, this can be done on the admin panel's _Network_ tab. Unlike most companies, we consider excess data collection a liability rather than an asset. As such, adminstrator emails are no longer included in server telemetry unless the admin has consented to be contacted.
+Following our last release we sent out an email to the admins of each outdated instance that had included their addresses in the server's daily telemetry. This appears to have been successful, as more than half of the 700+ instances that provide this telemetry are now running **4.7.0**. Previously, only 15% of instances were running the latest version. It's worth noting that of those admins that are hosting the latest version, less than 10% have opted into future emails warning them of security issues. In case you missed it, this can be done on the admin panel's _Network_ tab. Unlike most companies, we consider excess data collection a liability rather than an asset. As such, administrator emails are no longer included in server telemetry unless the admin has consented to be contacted.
 
 The same HTTP request that communicates server telemetry will soon begin responding with the URL of our latest release notes if it is detected that the remote instance is running an older version. The admin panel's _Network_ tab for instances running 4.7.0 or later will begin prompting admins to view the release notes and update once 4.8.0 is available.
 
@@ -39,7 +39,7 @@ To update from 4.7.0 to 4.8.0:
   * DOCX and ODT and TXT
   * PPTX and ODP
 * In addition to the /convert/ page which supports office file formats, we also put some time into improving interoperability for our existing apps. We're introducing the ability to export rich text documents as Markdown (via the [turndown](https://github.com/mixmark-io/turndown) library), to import trello's JSON format into our Kanban app (with some loss of attributes because we don't support all the same features), and to export form summaries as CSV files.
-* We've added another extension to our customized markdown renderer which replaces markdown images with a warning that CryptPad blocks remote content to prevent malicious users from tracking visitors to certain pages. Such images should already be blocked by our strict use of Content-Security-Policy headers, but this will provide a better indication why images are failing to load on isnstances that are correctly configured and a modest improvement to users' privacy on instances that aren't.
+* We've added another extension to our customized markdown renderer which replaces markdown images with a warning that CryptPad blocks remote content to prevent malicious users from tracking visitors to certain pages. Such images should already be blocked by our strict use of Content-Security-Policy headers, but this will provide a better indication why images are failing to load on instances that are correctly configured and a modest improvement to users' privacy on instances that aren't.
 * Up until now it was possible to include style tags in markdown documents, which some of our more advanced users used in order to customize the appearance of their rendered documents. Unfortunately, these styles were not applied strictly to the markdown preview window, but to the page as a whole, making it possible to break the platform's interface (for that pad) through the use of overly broad and powerful style rules. As of this release style tags are now treated as special elements, such that their contents are compiled as [LESS](https://lesscss.org/) within a scope that is only applied to the preview pane. This was intended as a bug fix, but it's included here as a _feature_ because advanced users might see it as such and use it to do neat things. We have no funding for further work in this direction, however, and presently have no intent of providing documentation about this behaviour.
 * The checkup page uses some slightly nicer methods of displaying values returned by tests when the expected value of `true` is not returned. Some tests have been revised to return the problematic value instead of `false` when the test fails, since there were some cases where it was not clear why the test was failing, such as when a header was present but duplicated.
 * We've made some server requests related to _pinning files_ moderately faster by skipping an expensive calculation and omitting the value it returned. This value was meant to be used as a checksum to ensure that all of a user's documents were included in the list which should be associated with their account, however, clients used a separate command to fetch this checksum. The value provided in response to the other commands was never used by the client.