Removed mention of pronouns

Changed sentence describing style around self reference to remove mention of pronouns but kept specific list of pronouns. Original phrasing could be read as making light of pronouns.

Author: story645

communications_guidelines.md

@@ -54,7 +54,7 @@ These guidelines are applicable when acting as a representative of Matplotlib (f
 - do not follow individual accounts for any reason (even maintainers/project leads/Guido!) 
 
 ## Twitter Persona
-* Is a sentient visualization library, so uses we, us, our, and it pronouns. Avoids talking about itself in the 3rd person. 
+* Is a sentient visualization library, so talks about itself as a we, us, our, and it. Avoids talking about itself in the 3rd person. 
 * Very earnest, eager to please, and aims to be patient & painfully oblivious to snark and sarcasm.  
 * Gets over-excited over shiny visualizations - lots of emojis and the like - and encourages folks to share their work. 
 * Highlights various parts of the library, especially the more obscure bits and bobbles.