docs : fix typos (#2567)

docs/internal/NODES.md

@@ -1,12 +1,12 @@
 # NODE
 
-Nodes are the underlying index that fullfills a GRPC API to deliver indexing on Text, Vectors and Relations.
+Nodes are the underlying index that fulfils a GRPC API to deliver indexing on Text, Vectors and Relations.
 
 ## Architecture
 
 Each node is composed by multiple shards and each shard have four indexes. In order to prioritize reads we split each node on three containers: reader, writer and sidecar.
 
-Reader is responsible of search functionallity via a GRPC interface, Writer is responsible on writing via a GRPC interface and Sidecar connects to a stream of indexing information and injects information on the writer.
+Reader is responsible for search functionality via a GRPC interface, Writer is responsible for writing via a GRPC interface and Sidecar connects to a stream of indexing information and injects information on the writer.
 
 <p align="center">
   <img src="../assets/images/nodes.svg" alt="Nuclia" height="200" style="background-color: white">

docs/internal/SEARCH.md

@@ -103,7 +103,7 @@ The hierarchy of tags is the following:
 - `/l`: user and processor provided labels: `/l/{labelset}/{label}`
   - Example: `/l/movie-genre/science-fiction`
 
-- `/n`: miscellanious resource metadata labels
+- `/n`: miscellaneous resource metadata labels
   - `/n/i`: mime type of resource
     - Example filters: `/n/i/application/pdf` or `/n/i/movie/mp4`
 

docs/reference/role-based-security.md

@@ -6,7 +6,7 @@ NucliaDB security model is based on three roles:
 - READER
 - WRITER
 
-Roles are passed through the HTTP Header `X-NUCLIADB-ROLES` and writen
+Roles are passed through the HTTP Header `X-NUCLIADB-ROLES` and written
 in upper case. Multiple roles can be sent appending them with
 semicolons, e.g., `X-NUCLIADB-ROLES: MANAGER;READER`.